Precision Balances and Scales for Laboratory

    Precision Balances

    Precise & robust precision balance for the laboratory and production environment

    XPE Precision Balances
    XS Precision Balances
    MS Precision Balances

    XPE Precision Balances

    XS Precision Balances

    MS Precision Balances

    Novel technology for reliable, compliant results
    Uniquely designed for ergonomic operations and productivity. XS balances provide accurate results in all weighing conditions such as fume hoods.
    Robust MS-TS balances incorporate security features such as FACT, LevelControl and MinWeigh, making them convenient and reassuringly easy to use.
    Technical Specificaton
    Capacity up to 64 kg with readability down to 0.1 mg
    High Speed Weighing Cell for Accurate Results
    MonoBlocHighSpeed cell, FACT Advanced adjustment
    Innovative new Weighing Pan
    SmartPan™ boosts perfomance in every environment
    Ergonomically Designed for Health
    Reduce eye and back strain with the new ErgoStand™
    Ease of Compliance
    StatusLight uses color to show balance readiness
    Easy Cleaning
    Rounded edges and flat surfaces are cleaned quickly
    Intuitive Operation
    Color display, touch-free operation for user safety
    Automatic Data Handling
    SOP user guidance, automatic documentation fulfill process treaceability requirements
    IP54 In-Use
    Protection from dust and spills, simple to clean
    Technical Specifications
    Capacity up to 64 kg, readability down to 1 mg
    Innovative new Weighing Pan
    Boost perfomance even in challenging conditions with the new SmartPan™
    Ergonomically Designed for Health
    Reduce eye and back strain with the new ErgoStand™
    Intuitive Operation
    Touchscreen with large digit display for best clarity
    MonoBloc HighSpeed Cell
    Integrated overload protection ensures robustness
    Easy Cleaning
    Rounded edges and flat surfaces are cleaned quickly
    Automatic Data Handling
    SOP user guidance, automatic documentation fulfill process treaceability requirements
    Technical Specification
    Capacity up to 12 kg and Readability down to 1 mg
    Fast Results
    MonoBloc cell, automatic internal adjustment
    Improved stability
    Three fixed feet and LevelLock for extra steadiness
    Efficient Operation
    7" extra-large color TFT touchscreen for ease of use
    Robust Longevity
    Full metal housing, robust and chemical resistant
    ML Precision Balances
    ME-T Precision Balances
    PL-E Portable Balances

    ML Precision Balances

    ME-T Precision Balances

    PL-E Portable Balances

    A compact balance with a 4.5" touchscreen, multiple built-in applications, battery operation, and of course good weighing performance and robustness.
    The entry level balance with a 4.5'' touch screen - all the essential functionalities and the solid performance you need for routine weighing procedures.
    PL-E portable precision balances offer dependable, go-anywhere weighing. Resilient, compact and lightweight, they are the ideal solution for accurate results in limited spaces.
    Technical Specifications
    Capacity up to 6200 g, Readability 1 mg - 0.1 g
    Reliable Results
    MonoBloc cell, internal adjustment
    Intuitive Touch Operation
    Comfortable 4.5" color TFT touchscreen
    Durable Construction
    Metal base with chemical resistant housing
    Fully Portable
    Lightweight, use batteries to weigh anywhere
    Capacity up to 5200 g
    Readability 1 mg - 0.1 g
    Intuitive Touch Operation
    Comfortable 4.5'' color TFT touchscreen
    Accuracy Ensured
    Conventional weighing cell and internal calibration
    Built-in Ease and Security
    Applications, sample IDs and passcode protection
    Tough and Lightweight Design
    Precise load cell guaranteeing accurate results
    Compact and Portable
    Every PL-E model can be DC or battery operated
    Stackable Cover
    Quick and easy storage - Stackable cover for efficient storage and protection
    1000 Balances. 4 Steps. One Recommendation. Find Your Balance Now

    1. What is a precision lab balance or scale?

    Precision laboratory balances, also called top loading balances, are a form of scale designed to offer highly accurate results, within the sub-milligram range. Used for the measurement of small samples, precision balances provide an accurate, quick, and simple way of determining the weight of items such as particulate matter. Electronic precision balances offer a wide range of weighing capacities, with maximum capacities up to 64 kg. They allow readability in the range of 1 mg (0.001 g) to 1 g, or 0-3 decimal places. High precision laboratory balances can extend this accuracy to 4 decimal places, on the display of the precision balance, 0.0001g (0.1mg) increments are used.

    Precision balances produce steady readings in a wider range of environmental conditions than analytical balances which must always be used under strict conditions to ensure accurate readings. Being less sensitive to temperature fluctuations and air currents, precision balances can serve as the more convenient method of measurement. While a draft shield is not always necessary for the accurate use of a precision balance, when working in a fume hood or under normal conditions with a high-resolution precision balance of 1 mg readability, one should be employed to maintain performance.

    The innovative SmartPan™ weighing pan used by METTLER TOLEDO’ XPR and XSR precision balances provides extraordinary stability and significantly reduces the impact of air currents on results. Repeatability is improved by up to 50% and even on 1 mg precision balances, accurate results can be acquired without a draft shield. Used in a fume cupboard, 5 and 10 mg models deliver results in as little as half the time of standard models.
    White Paper: Outstanding Weighing Performance – Even Under Harsh Conditions

    2. Where are precision balances used? What are the application areas of precision balances?

    A wide range of industry areas rely on the precision of balances, chemistry being the most common, to deliver exact results. Use for a precision balance range from research and quality control laboratories of pharmaceutical, chemical, food and textile industries, to educational institutions.

    Applications for a precision balance in a laboratory setting include: simple weighing, dynamic weighing, sample preparation, statistical quality control, formulation, and interval weighing. Highly accurate and reliable, a precision balance is the ideal choice for any daily weighing task in the lab.

    High precision, top-loading laboratory balances of 10 kg or more, equipped with a larger platform, are typically used in aggregate, pharmaceutical, chemical and adhesive formulation applications.

    3. Calibration, adjustment and routine tests of a precision balance – who should do what, when and why?

    A precision balance calibration assesses the behaviour of the chosen instrument. Calibration should only be performed by an authorized service technician. An adjustment changes the behaviour of a weighing instrument and requires an intervention which, in most cases, permanently alters the measuring instrument. Adjustment should not be mistaken for calibration, the terms are not interchangeable, and calibrations should always be performed after any adjustment procedure made to the balance. Many times people refer to "calibration" when "calibration and adjustment" is more accurate.

    In many cases it is, in fact, the results of a calibration procedure that indicates a need for an adjustment or other repair to be made. After the adjustment or repair is complete, the calibration procedure should always be repeated to verify the proper measurement relationship has been re-established. In between regular calibrations by a technician, routine testing by the user should also be made using two external weights. These user tests allow for early detection of potential issues and deviations from weighing process requirements.

    METTLER TOLEDO has developed a globally applicable scientific standard for the correct selection, calibration and operation of weighing equipment known as GWP®, or Good Weighing Practice™.

    Further clarification of terms regarding Calibration and Adjustment of weighing equipmentread the document.

    4. What is the influence of air drafts on my precision balance?

    As cited above, electronic precision balances do not directly measure a mass, rather the force of its weight. The uncertainty of this force depends not only on the technical specification of the measuring instrument, but also on many environmental effects such as temperature variations and air drafts. In the case of measurements of 0.001 g or less, the force exerted by moving air is easily detectable. A draft shield or enclosure, usually made of plastic or glass, fits around the weighing pan in order to shield the pan from these effects.

    Recent innovations of METTLER TOLEDO in the design of weighing pans for precision balances and scales help to minimize any errors due to air drafts. The innovative SmartPan™ weighing pan makes it possible to deliver results up to twice as fast, even under harsh conditions. The results show an outstanding 86% improvement in repeatability (precision) for a 1 mg readability balance under harsh conditions (inside a safety cabinet), delivering exceptional performance for any application.
    White Paper: Influence of air drafts on balances

    5. What is the influence of temperature on my precision balance?

    Temperature fluctuations can cause non-reproducible weighing results. For best stability and performance of measuring instruments, balances should be used in an area where room temperature can be regulated and where the instrument should remain with power ON continuously. Balances should be ideally set up on a dedicated workbench, with a suitable, maintained room temperature.

    When a precision balance is first connected to the power supply or switched on, a warm-up time of approximately 1-2 hours is recommended. This period allows the balance to adjust to ambient temperature and stabilise to its environment. This warm-up should be repeated every time the balance is turned on after a period of inactivity.

    METTLER TOLEDO precision balances are equipped with “FACT” (fully automatic motorized internal self-adjustment) which compensates for temperature drift. When a defined temperature difference is exceeded, the adjustment procedure is triggered automatically. This makes it possible to ensure the accuracy of the balance without operator intervention, delivering better usability across all applications.

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