Peptide Therapeutics

Precision and Control from Lab to Packaged Product

Peptide development, either through chemical synthesis or as recombinant molecules from cell based platforms present unique scientific and operational challenges. From research and process development to large-scale bioprocessing, scientists and engineers face low yields, productivity, batch variability, complex purification workflows, limited scalability, stringent Good Measuring Practice (GMP) standards requirements and sustainability targets.

METTLER TOLEDO partners with peptide development teams, offering an integrated ecosystem of laboratory instruments and software solutions. This enables seamless process modeling, analytical data acquisition, cross platform data integration, bioprocess monitoring and control, manufacturing weighing and material control, packaging inspection and lifecycle services. Our solutions streamline processes, reduce variability, and support data-driven decisions across the entire peptide value chain.

METTLER TOLEDO offers a comprehensive suite of advanced precision instrumentation, machinery, and software solutions to ensure quality and precision at every stage of the peptide production process.

Research Labs

Peptide research is an integrated cross-functional cycle that turns molecular designs into purified candidates with reliable assay readouts enabling faster, more informed go/no-go decisions.

In research labs, our microbalances and analytical balances with automated dosing ensure accurate weighing of amino acids and reagents. CytoDirect, an automated cell counter provides accurate cell viability data for cell based biological assays while Rainin pipettes with BioClean Ultra certified tips provide accurate and precise dispensing of liquid samples. Complementary analytical instruments such as pH meters, UV/Vis spectrophotometers, titrators and thermal analysis systems enable reliable peptide characterization from the start.

As routine work grows, we help teams with lab automation to move away from manual processes and improve efficiency, reproducibility, and safety.

Researcher operating precise automated laboratory equipment

Expand Analytical Coverage Without Expanding Complexity

Peptide synthesis through chemical or biotechnological methods, relies on routine in-place analytics in research labs. Connected tools and techniques help boost productivity and reduce failures at later stages of development.

METTLER TOLEDO offers an ecosystem of laboratory analytics, liquid handling, and lab software solutions that support biological, chemical and physical measurements while standardizing methods and keeping results consistent across teams. We can bring together instruments and software to enable more seamless workflows in research labs and therefore faster release-to-next-step decisions, clearer comparability, and stronger readiness for scale-up discussions.

Reduce Preparation Variability From the First Weigh-In

When peptide R&D runs on microquantities, every milligram counts: errors inflate cost, delay decisions, and compromise comparability across projects.

METTLER TOLEDO offers lab weighing solutions from precision to analytical and micro balances supported by Good Weighing Practice trainings to align performance with risk and application needs. We help you to connect balances to weighing software for centralized data handling and consistent reporting, so results move faster from bench to decision without manual rework.

Pipette Like Your Data Depends on It

Peptide screens and bioassays require precise low-volume liquid handling, consistent serial dilution preparation, and synchronized reagent addition in time-sensitive assays for accurate results. Rainin offers a range of pipettes and semi-automated liquid handling instruments to meet the needs of a wide range of workflows. To ensure data integrity and reliability, Rainin BioClean Ultra tips are rigorously tested for extreme levels of biological contaminants to ensure data fidelity. Additionally, PipetteX software streamlines pipette asset management and regular, documented service/calibration. ISO 17025-certified capability and alignment with ISO 8655 requirements keep liquid handling reliable and “audit-ready”.

Standardize Execution, Not Just SOPs

Even strong methods fail when execution varies across shifts, sites, or experience levels, creating rework, conflicting datasets, and slower tech transfer. Copy-pasting weights, pH readings, and analytical results into spreadsheets are slow, error-prone, and painful during investigations.

LabX software supports guided workflows, ELN and LIMS integration, and strong process security, helping teams follow consistent steps while automatically capturing instrument results. Because it can connect across instruments and integrate with other lab systems, you can turn best practice into a scalable routine rather than a training challenge.

Boost R&D throughput without losing comparability

As projects accelerate, manual steps and disconnected instruments can become a bottleneck and increase the risk of inconsistent execution and fragmented records. Automation and connected workflows can help streamline routine tasks and standardize execution without redesigning the whole lab at once.

METTLER TOLEDO helps you to apply scalable lab automation approaches (including incremental automation paths and software-based automation options) to move away from manual processes and improve reproducibility.

Route Development

Route development is a critical phase in peptide manufacturing that transforms initial synthesis strategies into robust, reliable, large-scale processes suitable for production. This stage integrates chemistry, process optimization, and analytical evaluation to ensure that peptides can be produced efficiently, consistently, and with the desired quality attributes.

In route development, precision and reliability are paramount. METTLER TOLEDO offers micro and analytical balances with automated dosing. These instruments enable accurate and traceable weighing of protected amino acids, activators, bases and reagents for early optimization. Liquid handling during route development, including solution preparation and dilution for analytics, demands high precision. Rainin electronic pipettes with BioClean Ultra certified tips consistently ensure accurate dispensing to reduce variability and improve the reliability of optimization data.

Complementary analytical instruments such as pH meters with NineFocus deliver accurate pH measurements with documentation while titration solutions ensure strict moisture control in reagents, solvents and resin. METTLER TOLEDO AutoChem technologies with automated lab reactors allow teams to standardize small scale screening efforts with structured and controlled execution of reaction parameters. In-situ analysis with particle size analyzers, FTIR and Raman provide essential data to characterize reaction conditions and intermediates, enabling fine-tuning of synthesis pathways. UV/VIS spectrophotometer provide reliable quantification and purity analysis of purified peptides.

When numerous QC-style checks are performed repeatedly on multiple samples, automated multiparameter measurement workflows minimize manual handling and transcription errors by integrating all measurements into one integrated system.

Scale Route Development Throughput With Automation

The choice of automation at route development directly impacts on how precisely critical parameters such as dosing, timing, temperature, and mixing are controlled and documented. This documentation is essential for comparison, troubleshooting, and successful transfer to later stages. Incremental automation allows teams to improve efficiency while maintaining flexibility and robustness in process development.

METTLER TOLEDO offers scalable lab automation and software solutions for compliant instruments and data, enhancing throughput without sacrificing comparability or control.

Standardize Route Execution and Data Management

Route development benefits from standardized execution protocols supported by LabX software, which guides workflows, integrates with ELN and LIMS, and automates data capture. This reduces errors and accelerates technology transfers by ensuring consistent documentation and process adherence.

Ensure Resin Performance and Efficient Linker Chemistry

Choice of resin and linker chemistry set foundational constraints on peptide synthesis, affecting cleavage conditions, reagent accessibility, and impurity formation over multiple SPPS cycles. Misaligned resin or linker selection can lead to incomplete couplings, deletion sequences, and variability dominated by support behavior rather than peptide chemistry, complicating interpretation and causing costly rework. Residual water content critically impacts resin swelling, which governs reagent diffusion and coupling efficiency.

METTLER TOLEDO solutions in the form of KF titrators and moisture analyzers support optimal resin/solvent system performance by providing accurate moisture results. Particle size analyzers ensure resin uniformity and monitor resin swelling. Automated lab reactors along with in-situ reaction monitoring with ReactIR allow comparison of candidate resin/ linkers and representative peptide sequences to standardize the linker conditions during structured screening studies.

Optimize Coupling and Cleavage Strategies

Coupling chemistry is a critical step in peptide synthesis. Small variations in activation conditions, base equivalents, moisture, pH, temperature, and contact time can significantly affect conversion rates and impurity formation across cycles. Deprotection and cleavage strategies also play a vital role in determining chemical compatibility, safety, impurity profiles, and downstream purification complexity.

METTLER TOLEDO supports optimized coupling and cleavage strategies with XPR Automatic Balances for precise reagent and cocktail preparation. RX-10 and EasyMax Reactor Systems provide tight reaction control and monitoring. ReactIR enables real-time reaction analysis, while NineFocus and inline pH meters ensure accurate pH measurement and control. Rainin Vero pipettes support consistent small-volume reagent addition, and, UV5Nano Spectrophotometers provide reliable crude peptide concentration quantification.

Additionally, lab automation solutions improve throughput, consistency, and efficiency in repetitive dosing and sample preparation tasks, helping teams achieve robust, scalable peptide synthesis workflows.

Optimize Cell Line Development for Recombinant Protein Production

During recombinant peptide production, cell line development is a multi-step process which transforms living cells into biological factories to produce the protein of interest. The process typically includes selecting a suitable host cell such as bacterial, yeast, mammalian, plant or insect. It then introduces the gene encoding the target peptide into the cells, and screens for cells that express the peptide at high levels. The selected cell line is then cultured and scaled up for manufacturing. This approach ensures consistent, high-quality production of peptides for therapeutic or research use.

Rainin multichannel pipettes, combined with the Rainin MicroPro semi-automated liquid handling system and BioClean Ultra tips, streamline high-throughput screening by improving efficiency and reducing manual effort. CytoDirect further accelerates workflows with rapid, reliable cell counting and viability analysis, minimizing operator variability and enhancing reproducibility.

Mettler-Toledo International Inc. laboratory balances ensure precise weighing of media and reagents, while pH meters enable accurate adjustment of media and buffer conditions. Complementing these capabilities, UV/Vis spectrophotometers support culture growth monitoring, protein quantification using BCA, Lowry, and Bradford assays, and purity assessment through A280 absorbance measurements.

Process Development

Process development work translates promising lab methods into reliable, transferable processes where consistent routine measurements and tighter control of critical parameters matter.

As throughput and batch sizes increase, moisture analyzers and KF titrators deliver fast, reliable moisture results to support productivity and process optimization, while automated lab reactors, automated reaction sampling, particle size analyzers, reaction calorimeters, FTIR and Raman, and scale-up and modeling software help reduce bottlenecks by enabling automation of reaction conditions, experiment controls, and data collection for repeatable chemistry around the clock. UV/Vis spectrophotometers quantify peptides and assess its purity in chromatography fractions, monitor cell growth at 600 nm during recombinant peptide production, and track Fmoc deprotection completeness at 290 or 301 nm in SPPS.

Standardize Multi-Parameter Routines as Engineering Work Scales

Process development and scale-up work can increase the volume of routine measurements needed to interpret results and compare runs, and sequential single-instrument steps can add time and handling variability.

To support analytical CMC needs during process development, METTLER TOLEDO offers modular multiparameter systems. These can be configured to measure multiple parameters in standardized measurement routines such as density, refractive index, color, pH and conductivity. When automated with an online or offline autosampler, it can automate sampling, measurement and cleaning. An integrated barcode reader improves data reliability by associating the right sample with the right result.

Monitor Process Parameters With In-Line Sensors

Optimizing the growth environment of the recombinant host cells is essential to maximize peptide expression and yield. This requires fine tuning of parameters such as temperature, pH, dissolved oxygen levels, agitation speed, nutrient feed rates, and induction timing during recombinant peptide synthesis. Careful control of these conditions ensures healthy cell growth, reduces stress and proteolysis, and enhances the folding and stability of the expressed peptide. Process analytical solutions by METTLER TOLEDO, including inline sensors for pH, dissolved oxygen and dissolved CO2, provide continuous, real-time monitoring of critical process parameters in peptide manufacturing. This enables precise control, maximizes yield and productivity, ensures consistent product quality, reduces batch variability, minimizes batch loss risk, and optimizes operational efficiency.

Scale-up

During scale-up, the focus shifts to translating the optimized small-scale process into larger pilot or commercial bioreactors while maintaining critical quality attributes (CQAs). Engineering challenges during biological peptide synthesis include achieving adequate oxygen transfer rates (kLa), efficient mixing, managing shear forces to protect sensitive cells, effective antifoam usage, and reliable heat removal. Additional challenges include robust cleaning-in-place (CIP), and sterilization-in-place (SIP) protocols, along with maintaining sterility and containment. For chemical peptide synthesis, engineering focus areas include mixing and mass transfer to ensure homogeneous reagent distribution and, heat removal during coupling/cleavage. Additional priorities include solvent handling and safety, solvent recovery and waste treatment.

METTLER TOLEDO balances ensure accurate weighing of raw materials while moisture analyzers and Karl Fischer titrators provide rapid and dependable moisture measurements ensuring reagents, solvents and resin integrity. Precise pH measurement solutions like NineFocus and inline pH meters ensure reliable pH measurements to maintain optimized conditions.

See Process Changes in Real Time to Support Endpoint Decisions

During scale-up, differences in equipment and conditions can change process behavior and drive rework if teams lack sufficient control and insight. When changes happen quickly, infrequent sampling may miss inflection points that affect outcomes and complicate investigations later. In-situ insight can help teams understand what changed, when it changed, and how conditions correlate with outcomes, supporting more confident decisions during development.

METTLER TOLEDO AutoChem technologies include automated lab reactors, reaction calorimeters, in-situ analysis with particle size analyzers, ReactIR, and ReactRaman and modeling software. Together they extend process control and provide deeper insight into reaction dynamics. METTLER TOLEDO inline sensors deliver continuous, real-time measurement of key process parameters such as pH, dissolved oxygen, and dissolved CO2 during fermentation and cell culture during biological peptide synthesis.

In‑Lab QC

Quality control is the checkpoint that verifies incoming materials, intermediates, and final products meet specifications so teams can release, rework, or investigate with confidence.

In QC labs, precision instruments for weighing, liquid handling, and routine analytical measurements standardize day-to-day methods. Laboratory software documents results and support controlled workflows in regulated environments such as GLP/GMP labs. CytoDirect Cell Counter by METTLER TOLEDO enables accurate cell counting and viability assessment, supporting reliable evaluation of biological potency and activity in bioassays,

For multiparameter routines common in QC, modular multiparameter systems combine several measurements into a single workflow and integrate with LabX to support automation, instrument and results management, including ELN and LIMS integration.

As routine work grows, lab automation can be applied incrementally to standardize repetitive QC tasks (e.g., weighing, sample preparation, titration, pipetting, and plate‑based assays) and reduce hands‑on time.

Make Routine QC Weighing Repeatable and Review-Ready

QC routines rely on consistent sample preparation and measurement steps, but variability can creep in through handling differences, balance setup, and inconsistent documentation. Standardized weighing workflows and fit-for-purpose balances help QC teams reduce avoidable variation, minimize rework, and streamline review when results are checked and trended.

METTLER TOLEDO enables repeatable QC weighing with analytical, precision, micro, and automated balances. Weighing software and standardized workflows support consistent documentation and straightforward data export/reporting where needed. We support performance with regular, documented service and calibration (including ISO 17025-certified capability) to keep weighing audit-ready and continuously reliable.

Meet Compendial UV/Vis Requirements With Traceable, Qualification-Ready Instruments

UV/Vis spectrophotometry is a standard QC method for peptide identity, concentration determination, purity testing and assay, referenced in USP <857> and Ph. Eur. 2.2.25. In regulated environments, instruments must be qualified and methods documented with full audit trail. METTLER TOLEDO UV7 spectrophotometers support GMP-compliant UV/Vis workflows: fixed-wavelength and spectral scanning from 190–1100 nm, direct LabX integration for guided workflows, automatic result capture, user access management, and electronic audit trails aligned to 21 CFR Part 11 and Annex 11. IQ/OQ/PQ qualification services and ISO 17025-certified calibration are available through our service organization to keep instruments inspection-ready.

Reduce Transcription Risk With Connected, Standardized Workflows

Manual transcription of sample IDs, method parameters and results increases errors, audit risk and slows review, especially as sample volume grows and workflows become more time sensitive. Digital capture and controlled data handling help reduce avoidable deviations and make review and audit preparation more efficient in regulated environments.

METTLER TOLEDO enables streamlined, compliant-ready documentation with its lab software portfolio, including LabX. These solutions connect to instruments such as, balances, UV/Vis spectrophotometers, pH meters and other bench devices to automatically transfer IDs, methods, and results into electronic records, reducing transcription steps and improving traceability. Features such as audit trails and user management support work in regulated labs, helping teams keep documentation consistent and inspection ready.

Standardize Multiparameter QC Checks in One Workflow

QC labs often need multiple parameters to reach a conclusive assessment, and sequential measurement steps can add time, handoffs, and operator dependence. A single standardized method helps teams improve consistency, reduce manual steps, and simplify review when results are trended or investigated.

METTLER TOLEDO enables standardized multiparameter QC checks in one workflow with modular multiparameter systems designed to measure multiple parameters using one method. Automation options such as an autosampler and barcode identification reduce sampling, measuring, and cleaning steps where configured. LabX manages methods and results centrally, consolidating measurements and associated metadata in one place, to support data integrity and review-readiness in regulated environments.

Bioprocessing Monitoring & Control

Process analytical solutions, in the form of inline sensors, play a crucial role in peptide manufacturing by providing real-time, in situ monitoring of Critical Process Parameters (CPPs) in production process control to ensure product Critical Quality Attributes (CQAs).

Continuous access to process data enables manufacturers to detect deviations early, maintain optimal operating conditions, and respond proactively to process variability. The resulting data streams provide valuable process insight that can be integrated into manufacturing execution systems and advanced analytics platforms. This supports enhanced process understanding across development, scale-up, and commercial production, while creating a strong foundation for data-driven manufacturing strategies.

Upstream Process Monitoring

METTLER TOLEDO inline sensors provide continuous, real-time measurement of critical process parameters (CPPs) including pH, dissolved oxygen, and dissolved CO2 in upstream processes.

These comprehensive monitoring capabilities enable precise process control, maximize yield and productivity, ensure consistent product quality while reducing batch-to-batch variability. Thereby reducing the risk of batch loss and optimizing overall operational efficiency.

Maintain pH Measurement Performance in Harsh Peptide Conditions

Peptide manufacturing is a challenging environment for inline pH sensors due to protein fouling, organic solvent interference, and high temperatures encountered during sterilization in process (SIP).

METTLER TOLEDO InPro 3250i digital, SIP compatible in-line pH sensor with pressurized electrolyte and predictive diagnostics delivers high measurement performance in peptide manufacturing.

Stabilize Dissolved Oxygen Control During Dynamic Operation

Dissolved oxygen control is also vital for maximizing batch throughput and maintaining robust cell metabolism. Measurement drift and low signal-to-noise ratios caused by air bubbles are major challenges in inline DO monitoring.

METTLER TOLEDO InPro 6860i optical DO sensor complemented with anti-bubble OptoCap technology, ensures high measurement accuracy through bubble deflection. This combination maximizes signal-to-noise ratio during production and transient scale-up processes, where accurate control of oxygen transfer rate coefficients is key to a successful scale-up strategy.

Monitor Dissolved CO2 Frequently Enough for Control Decisions

Measuring and controlling dissolved CO2 is critical in peptide manufacturing, as CO₂ accumulation directly affects product yield, quality, and pH stability by influencing metabolic pathway switch between catabolism and anabolism of high density cultures. Traditional measurement methods using Blood Gas Analyzers are slow and too infrequent for adequate process control and metabolic optimization, and most inline CO2 sensors are not SIP tolerant.

The InPro 5000i SIP-tolerant and autoclavable sensor provides accurate CO2 measurements, allowing continuous inline monitoring and thus real-time process control.

Off-Line Process Checks

METTLER TOLEDO offers compliance-ready, benchtop UV/Vis spectrophotometers for measuring cell density during production and assessing product titer in clarified harvest samples prior to downstream processing. For off-line process monitoring, our range of spectrophotometers complement inline sensor data with rapid A280 quantification of clarified harvest samples and OD600 cell density measurements. This supports both product titer monitoring and process decision-making without waiting for full analytical lab turnaround.

Downstream Process Monitoring

Downstream processing in peptide manufacturing is a critical phase that focuses on the recovery and purification of peptides to achieve high purity and safety standards required for therapeutic use. This process encompasses several key steps, including filtration, chromatography, concentration, formulation, and sterile filtration, each designed to remove impurities and ensure the integrity of the peptide product. By carefully monitoring and controlling critical parameters throughout downstream processing, manufacturers can maximize yield, maintain product quality, and guarantee batch-to-batch consistency. The integration of advanced inline sensors and real-time analytical tools enables precise process control and optimization, making the purification and finishing stages more efficient and reliable for the production of high-quality therapeutic peptides.

Standardize Key Unit Operations and Critical Parameters in Therapeutic Peptides Downstream Workflow

In the downstream processing of therapeutic peptides, critical unit operations such as filtration, chromatography, and concentration are closely monitored to ensure product quality and stability. During filtration, key parameters like pressure, temperature, pH, and conductivity are tracked to maintain filter integrity, optimal conditions, product stability, and detect buffer changes. Chromatography requires careful control of pressure, temperature, pH, conductivity, and UV absorbance to prevent column damage, optimize binding and elution, monitor buffer composition, and assess protein concentration and purity. In the concentration step, pressure, temperature, pH, and conductivity are managed to avoid membrane fouling, maintain product stability, and ensure proper buffer exchange. UV measurements help track protein concentration and purity. Together, these parameters ensure efficient and reliable downstream processing of therapeutic peptides.

METTLER TOLEDO Pendotech offers pre-sterilized single-use in-line sensors for pressure, temperature, conductivity, UV absorbance, and pH, designed for applications in the biopharmaceutical industry. These sensors streamline workflows, reduce contamination risks and enhance overall process efficiency, thereby ensuring consistent product quality throughout the manufacturing cycle. For reusable downstream set up Ingold sensors by METTLER TOLEDO for pH and conductivity offer accurate and reliable measurements.

Optimize Formulation Development to Maintain Product Quality and Stability

In formulation, in-line conductivity and pH sensors by METTLER TOLEDO ensure correct buffer conditions while temperature sensors control preserves product stability during mixing. During sterile filtration, pressure monitoring detects filter blockage or integrity issues, temperature control prevents product degradation, while pH control maintains product quality.

Fast, in Situ Oxygen Safety Measurements in Small Spaces

Preventing explosive gas mixtures developing in headspaces and vent pipes demands fast, accurate oxygen measurements. Many oxygen sensors are prone to contamination or fouling and require frequent maintenance, recalibration, and spare parts. And more robust analyzers do not fit in small installation spaces.

GPro 500 Tunable Diode Laser analyzers by METTLER TOLEDO provide the smallest installation options in the market, enabling rapid, safe, in situ oxygen measurement. They are also virtually maintenance-free. GPro 500 offers direct in situ laser analysis in pipes as small as 2” (DIN 50), even in wet or dusty gas streams.

From Raw Material to Final Fill: Weighing as the Critical GMP Control Point

In GMP-compliant peptide manufacturing, weighing is a critical and highly visible process step that ensures precise material control from the start. It marks the point where materials move from inventory to batch ownership, initiating traceability, documentation, and compliance with regulatory standards. Accurate weighing is foundational for yield calculation and reconciliation. Under 21 CFR Part 210.3, actual and theoretical yield are clearly defined, providing the regulatory basis for evaluating process performance. This step is essential for batch yield calculations, investigations, and release decisions, supporting both scale-up and consistent manufacturing.

Safe and Compliant Weighing in Hazardous and Hygienic Peptide Manufacturing Environments

Peptide production often involves hazardous environments with flammable powders and solvents, requiring weighing equipment that complies with strict hazardous area standards. Additionally, hygienic design is crucial to protect product integrity during fermentation, synthesis, and purification stages.

With hazardous area-certified and hygienic weighing systems, manufacturers achieve safe, accurate, and compliant material measurements, upholding quality and control throughout the peptide manufacturing process.

The Critical Role of Gravimetric Control in Regulatory-Compliant Yield Management

Gravimetric control is essential for real-time monitoring of material additions. Weighing accurately ensures precise tracking of what is added and removed at each process stage. Static or semi-automatic gravimetric dispensing applies to buffer preparation or reagent and ingredient dosing. In contrast, automatic gravimetric feeding is commonly used for nutrient feeding and pH adjustments in cell culture and fermentation. It also plays a key role in buffer and solvent additions in synthesis or purification steps such as chromatography and tangential flow filtration.

Modular and Adaptable Weighing Solutions for Agile Biopharmaceutical Manufacturing

Modern biopharmaceutical manufacturing demands modular and flexible weighing solutions to handle multiple products, small batches, and frequent changeovers while maintaining GMP compliance.

Integrated smart scales provide real-time, accurate weight data with automated documentation and system integration, reducing human error and supporting consistent workflows.

Mobile scales, skid-integrated weigh modules, and advanced software-driven indicators enable scalable, adaptable production with full traceability and condition monitoring.

Together, these technologies empower manufacturers to optimize operations, ensure data integrity, and achieve agile, compliant biomanufacturing.

Scalable Weighing Solutions to Support Agile Production

Scaling biomolecule manufacturing requires precise, GMP-controlled weighing to maintain process consistency, yield, and compliance as production grows from grams to kilograms and beyond.

Good Weighing Practice (GWP) provides a structured framework for equipment qualification, calibration, and maintenance, driving consistent accuracy and traceability across all scales. Implementing GWP reduces weighing errors, supports regulatory compliance, and strengthens process control and yield reconciliation, enhancing confidence and control throughout scale-up.

Flexible solutions enable scalable, modular production with full traceability.

Integrated digital systems improve data visibility and predictive maintenance, minimizing downtime and supporting robust, compliant scale-up from development to commercial manufacturing.

Enhancing Peptide Production with Fully Integrated Weighing and Manufacturing Systems

Modern peptide manufacturing relies on fully integrated digital systems that automatically capture and record weighing data, including weights, operator IDs, timestamps, and material details. Integration with MES, ERP, or LIMS ensures comprehensive, auditable electronic batch records to support yield reconciliation, deviation management, and batch release. This automation minimizes operator errors, enhances traceability, and provides clear evidence of process control. It also supports compliance with data integrity regulations like 21 CFR Part 11 and Annex 11 and strengthens GMP readiness.

Supporting the End-To-End Manufacturing Process

Precise upstream weighing directly influences downstream processes such as formulation, filling, and packaging, ensuring consistent product quality and reducing the risk of deviations. Maintaining traceability and control from raw material weighing through final filling is essential. Weighing data serves as a critical part of the GMP evidence package that supports batch release and regulatory compliance.

Packaging & Product Inspection

Product inspection solutions serve as the final stage of quality control. They ensure only products that meet defined quality standards, without missing or defective components, reach the market. For example, GLP-1 injection pens require complex assembly and multi-component packaging that demand rigorous quality control at every stage. Potential quality risks, such as missing parts, fill level deviations, or integrity breaches, can compromise both product performance and patient safety. Automated inspection technologies, including checkweighers and X-ray systems, deliver comprehensive quality control by supporting accurate dosing, package completeness, and structural integrity throughout manufacturing.

Checkweighers confirm carton completeness at the end of the line, verifying the correct number of pens, presence of instruction leaflets, and total package weight for integrity and compliance. When positioned earlier in the process, they can also detect fill level issues before final assembly, reducing waste and rework. Meanwhile, x‑ray inspection enables individual mass verification of internal components and provides a single‑platform solution that can replace multiple separate checks.

Vision inspection solutions support quality control by verifying labeling accuracy, confirming correct printing and artwork, and checking that barcodes and variable data are present, readable, and correctly matched to each product.

Detect Missing Parts in Multi-Component Peptide Packages

GLP‑1 injection pen kits are composed of several critical elements pens, needles, and leaflets that must be present, correctly positioned, and intact. Product inspection systems perform completeness and integrity checks to ensure packaging accuracy and product reliability.

METTLER TOLEDO enables completeness and integrity checks for multi-component kits using checkweighing and X-ray inspection to verify:

Correct number of pens and needle containers

Presence of the instruction leaflet

Proper needle and pen positioning

Accurate fill level within each pen

Fill level verification can be conducted using both checkweighing and X-ray inspection to detect under- or overfilling, while X-ray inspection confirms assembly integrity to prevent mispositioned components.

Handle Lightweight and Delicate Products at High Throughput Without Compromising Checks

Modern peptide packaging lines often operate at significantly higher speeds than traditional pharmaceutical production lines.

Product inspection systems from METTLER TOLEDO are engineered for smooth, reliable handling of lightweight, delicate products maintaining precision and product safety even at throughputs of up to 400 parts per minute. This minimizes downtime, prevents line stoppages, and offers continuous inspection performance without compromising sensitivity.

Meet Stringent Compliance Requirements and Protect Product Integrity

Every deviation in peptide product manufacturing can have serious implications under strict GMP and quality frameworks. Product inspection systems support manufacturers in maintaining full regulatory compliance across production lines while protecting product integrity and patient safety.

Advanced product inspection solutions from METTLER TOLEDO enable data integrity and traceability in line with FDA 21 CFR Part 11, 210, and 211 requirements. This helps manufacturers uphold both process transparency and global quality standards.

Strengthen GLP‑1 Tablet Inspection From Infeed to Ship

While today’s GLP‑1 medications are primarily available as injectable therapies, industry trends indicate that more solid‑dose forms, such as tablets, are on the horizon, where product inspection solutions will play an essential role in maintaining quality and process reliability. In solid pharmaceutical production, checkweighers confirm accurate tablet count and consistent package weight, while x‑ray inspection detects missing or broken tablets and verifies container completeness. Metal detection systems provide critical contamination control, identifying metal contaminants introduced during processing. Vision inspection further enhances quality assurance by verifying label placement, print accuracy, and correct product identification on every package. Together, these technologies deliver comprehensive inspection coverage across pharmaceutical manufacturing lines, helping ensure that GLP‑1 medications, in all their forms, meet defined quality and compliance standards.

METTLER TOLEDO supports this inspection strategy with a broad product inspection portfolio for the pharmaceutical industry, including checkweighing, X-ray, metal detection, and vision inspection solutions.

Service: Lifecycle Support (Qualification, Training, Uptime)

Instrument failures, calibration gaps, and missing qualification documentation are among the most common sources of audit findings and batch delays in peptide manufacturing and QC.

METTLER TOLEDO global service programs cover calibration, compliance documentation, equipment qualification, and preventive maintenance to keep instruments fleet fit-for-purpose, inspection-ready, and running reliably across development and manufacturing lifecycle.

To reduce the operator level risk, our structured Good Measuring Practices training helps teams build consistent, documented measurement routines from day one, minimizing human error before it reaches results.

Achieve and maintain compliance through consistent procedures and adhere to local and global regulations and standards, such as:

ISO 17025

EURAMET

USP, GLP and GMP

NIST Handbook 44 and OIML

Measuring Instruments Directive (MID)

Ensure a perfect start and ongoing, worry-free use with immediate and long-term benefits:

Assurance that the equipment is fit for use

Cost-savings through manufacturer's qualification services

Confidence that the equipment meets process requirements

Identification of needed calibration and maintenance

Pre-plan your periodic maintenance that provides you with complete trust that your equipment achieves:

Consistent, accurate results

Safe and reliable operation

Optimal performance possible

A longer equipment lifespan, resulting in a higher ROI

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Meeting the Needs of Peptide Manufacturing

Balancing Science and Process in Peptide Synthesis

Many peptide APIs are developed through solid-phase peptide synthesis (SPPS), a stepwise process that allows precise control over sequence and modification. Others, particularly more complex or longer-chain peptides, are expressed in biological systems using microbial or mammalian cells.

While these methods differ in scale and platform, they share a need for rigorous process control and accurate material handling at every stage.

Whether weighing amino acids, solvents, or reagents in the R&D lab or handling kilogram-scale batches in production, accuracy in every measurement matters. Minute variations can affect:

Coupling efficiency.

Final yield and purity.

Reproducibility across batches.

METTLER TOLEDO provides weighing solutions for both laboratory and industrial applications. From microbalances that support formulation development to floor scales used in production suites, our equipment delivers the precision and compliance pharma manufacturers require. Integration with software systems also helps ensure full traceability and minimizes manual documentation errors.

Chemical Peptide Synthesis: Enhancing Yield and Purity

Solid-phase peptide synthesis (SPPS) remains the gold standard for producing short to medium-length peptides, including therapeutic APIs like GLP-1 analogues or calcitonin. However, SPPS workflows can be complex, involving:

Precise addition of protected amino acids.

Efficient removal of protecting groups.

Solvent management and reaction control.

Understanding the progress of peptide coupling reactions is critical. In-situ FTIR and Raman spectroscopy tools by METTLER TOLEDO provide real-time insight into each step of synthesis, allowing scientists to monitor deprotection and coupling reactions, identify incomplete reactions early, and reduce overuse of costly reagents.

Controlling temperature, stirring, and reagent addition precisely across different synthetic steps with Automated Reactors such as EasyMax™ and OptiMax™ helps optimize reaction conditions. These reactors enable the development of a safe scale-up from milligrams to kilograms and the achievement of high reproducibility required for tech transfer.

pH control is critical for peptide cleavage and purification. METTLER TOLEDO provides InPro series sensors that are tailored for use in harsh solvents, ensuring robustness and regulatory compliance during acidic cleavage or basic wash steps.

UV/Vis spectrophotometry is used to monitor peptide purity, track yield across purification steps and monitor reaction steps like Fmoc deprotection completeness. METTLER TOLEDO UV/VIS Excellence spectrophotometers with seamless integration with LabX software provide reliable and accurate results.

Biotechnological Peptide Production: Scale with Control

Many peptides, especially interferons, enzymes, or fusion peptides, are produced using recombinant technologies in microbial or mammalian systems. These processes require strict environmental control and real-time monitoring to maintain cell viability, protein expression, and product quality.

pH, dissolved oxygen (DO), CO₂, and conductivity must be precisely controlled during fermentation. ISM sensors from METTLER TOLEDO provide reliable real-time measurements, predictive diagnostics, sensor lifecycle management, and integration with PAT (Process Analytical Technology) strategies.

Buffer Preparation, Purification, Formulation, and Final Quality

Once synthesized or expressed, peptides undergo multiple steps of buffer preparation, purification and formulation before reaching their final drug form. Reverse-phase HPLC, ultrafiltration, and lyophilization are common techniques used to achieve the purity and stability required for therapeutic use.

Accurate preparation of buffers, solvents, and excipients is critical at this stage. Inconsistent concentrations or pH deviations can reduce recovery or compromise product stability. Whether during ultrafiltration prep, final formulation blending, or freeze-drying optimization, precision and reproducibility are non-negotiable.

Normal flow filtration and tangential flow filtration play vital roles in downstream bioprocessing. Normal flow filtration is mainly used for preparing large volumes of buffer, and tangential flow filtration primarily employed for clarification steps. The in-line monitoring of pH, conductivity, temperature, and UV absorbance enable real-time control of bioprocess, ensuring optimal conditions that uphold product quality and consistency. This continuous measurement allows for the rapid identification of any deviations, facilitating timely adjustments that enhance process efficiency, increase yield, and maintain product purity throughout downstream processing.

Weighing equipment, pH meters, and UV/Vis spectrophotometers integrated into lab or production environments enable reliable downstream execution and QC in peptide manufacturing. Importantly, when the data generated is centrally collected and managed, it strengthens traceability and supports regulatory documentation.

Additionally, high precision moisture analysis and water content determination by KF titration support final formulation and stability testing, key in freeze-dried peptide products. Whether during development or commercial QC, laboratory software solutions ensure consistent analytical data for required regulatory compliance and product quality.

The quality and safety of pharmaceutical water are essential to prevent contamination, product failure, and regulatory issues. To maintain water purity and minimize risks, the pharmaceutical industry monitors four key parameters in real time: conductivity, Total Organic Carbon (TOC), bioburden, and dissolved ozone, as specified by global Pharmacopeias. METTLER TOLEDO provides a comprehensive solution for real-time monitoring of these parameters, ensuring safe, high-quality water for consistent peptide production.

Product Inspection: A Final Check for Patient Safety

From initial amino acid weighing to final vial inspection, each step in the peptide production journey demands precision. As products are near release, automated product inspection systems serve as a critical safeguard before products leave the facility. For peptide therapeutics, this includes:

Physical contamination detection: X-ray inspection, metal detection or both to identify and remove physically contaminated products before entering the market.

Fill level control: Checkweighing, vision inspection and X-ray inspection monitor, measure and regulate fill levels to meet strict dosage and regulatory specifications.

Quality and integrity checks: Checkweighing, vision inspection and X-ray inspection perform integrity checks to help ensure pharmaceutical packages meet regulations and deliver safe, complete products to consumers.

Label quality inspection: Vision inspection for label quality control to detect label-related defects and mitigate the risk of product recalls.

Product Inspection solutions from METTLER TOLEDO are designed for high-efficiency pharmaceutical environments, offering:

GMP-compliant systems that integrate easily into existing lines.

Traceable performance verification for audit-readiness.

Support during the specification and qualification process, from evaluating the right application, selecting suitable product testing equipment and professional installation through to dedicated Equipment Qualification packs (EQpack) for efficient validation processes.

These systems not only protect product quality but also strengthen brand integrity and support regulatory compliance with agencies like the FDA, EMA, and global health authorities.

FAQs

What are the main steps in the peptide manufacturing process?

Peptide production relies on advanced biochemical synthesis using solid-phase peptide synthesis (SPPS) for short peptides, while for larger, more complex molecules requiring post-translational modification, bioprocesses using recombinant protein expression systems, or a combination of bioprocesses and biochemical synthesis are the system of choice to ensure purity, potency, and consistency.

How does solid-phase peptide synthesis (SPPS) build peptides step-by-step?

1. A peptide is built step-by-step by adding amino acids in a precise sequence on a solid resin.

2. After each addition, excess chemicals are washed away and protective groups are removed to prepare for the next step.

3. The finished peptide is cleaved from the resin and purified, typically using HPLC.

4. The purified peptide is turned into a solid or liquid product. Quality control tests are run throughout to ensure purity, safety, and effectiveness.

What steps are involved in recombinant biological production of peptides?

1. Peptide-producing bacteria or yeast are grown in a nutrient-rich medium optimized for high yield.

2. Peptides are separated from the culture using centrifugation and filtration. If inside cells, the cells are broken open first.

3. Peptides are purified using techniques like chromatography and tangential flow filtration, followed by any necessary cleavage or modifications.

4. Excipients are added, and the product is tableted or filled into vials, under sterile conditions. Quality control tests ensure purity, safety, and functionality.

What are the key challenges in peptide synthesis?

Chemical and solid phase peptide synthesis is a widely adopted method for peptide production, especially for short peptide production, and offers advantages over recombinant biological methods, in certain use cases: 

Cost: Manufacturing short peptides is less expensive at small to medium scale production, given simpler infrastructure requirements, fast turnaround time, and standardized resources. However, recombinant methods may be more cost-efficient at larger scales, longer or more complex peptides.

Whether produced through biochemical synthesis or recombinant biological methods, peptide manufacturing remains inherently expensive. Each approach comes with its cost drivers, from reagent and solvent use in chemical and solid-phase synthesis to complex infrastructure and long production cycles in biological expression. As a result, there is a strong drive across the industry to maximize process efficiency, minimize variability, and ensure consistent product quality at every scale.

Flexibility: It allows the incorporation of non-coding amino acids and diverse backbone modifications to improve stability.

Purity: Chemical and solid-phase synthesis methods avoid the risk of host-cell contaminants and enable precise control of the product. However, recombinant methods also achieve high purity with proper downstream processing.

What difficulties arise in biological peptide production methods?

Recombinant biological approaches are common for larger proteins requiring complex post-translational modifications, and are advantageous for peptide production in circumstances such as:

Complexity: Biological methods enable complex peptide folding and specific post-translational modifications compared to chemical methods.

Sustainability: Chemical methods use an excess of high-purity, expensive reagents and solvents to ensure reaction completion, leading to greater chemical waste, and could affect global supply chains for essential solvents.

Peptide Length: Biological methods are better suited for producing longer peptides (>50 amino acids).

Your Partner in Precision

Every stage of peptide development, from R&D to commercial manufacturing, carries decisions that shape long-term success. Data-driven processes help achieve industry goals of innovation, efficiency and sustainability by addressing early- and late-stage risks, streamline scale-up, and support audit readiness.

Partner with METTLER TOLEDO to accelerate progress and achieve your peptide development goals.