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Laboratory Weighing – Laboratory Balances and Scales
What is the difference between mass and weight?
The words ‘mass’ and ‘weight’ are frequently used interchangeably, and both are determined by weighing, however, in terms of laboratory balances and scales, the difference between the two is key. Mass measures the amount of material in any given item, is independent of location, and remains the same, no matter their environment.
How do electronic balances work? What is the electromagnetic force compensation principle?
With mechanical balances, a sample is placed on one end of the beam, reference weights on the other, until it is perfectly balanced, the sum value of the weights representing the mass of the sample.
Common laboratory balances and scales types are ultra-micro, micro, semi-micro, analytical, and precision balances.
Our Laboratory Balances and Scales video course Basics and Weighing Influences explains basic concepts of good weighing practice.
For accurate measuring, consider:
Make sure that you select a lab balance or laboratory scale that meets YOUR process requirements and respective tolerances.
The resolution is the degree to which change can be detected, usually expressed as a number of points. It is the capacity (in g) divided by the readability (in g).
Tolerances determine whether a lab balance or lab scale behaves "well enough" to meet process requirements and how much deviation is permittable. Tolerances set the criteria to issue a Pass/Fail statement. Tolerances come from a variety of sources, including legal agencies, manufacturing industries, and the process itself.
Gold and Carat Balances, Stent- and Filter Weighing Solutions, Calibration Solutions for Micro-, Single- and Multichannel Pipettes - we offer a broad portfolio tailored to your special needs.
METTLER TOLEDO offers for their comparators a variety of software solutions. No matter if security, proficiency or dissemination is the challenge, we conquer all.
Transfer the results from your balance or moisture analyzer directly into Excel.
Solutions are available for a range of weighing applications e.g. batching, SQC etc.
Connect your balance or lab instrument to a printer to document results and to ensure compliance with GMP/GLP/ISO.
ErgoClip container holders allow precise and secure positioning of tare vessels on the balance. Dose straight into the tare vessel in one easy step.
Dosing through this small adjustable opening in the draft shield minimizes air turbulence in the weighing chamber to give fast, stable results.
Safely remove electrostatic charge from your sample and tare container before weighing. Automatic options available.
Height adjustable Weighing Tables provide a stable weighing surface and an ergonomic working area for every type of balance.
Optional interfaces for Ethernet, Bluetooth, PS / 2, RS232 and LocalCAN allow easy connection to other instruments, peripherals, PCs and networks.
Connection to other instruments, peripherals, PCs and networks is easy with the correct connection/interface cable.
Sensors, foot switches and adapters allow convenient hands-free operation.
Extra displays as well as stands for terminals and printers allow you to create a truly ergonomic workspace.
Lock your balance with an anti-theft device.
Save time and avoid transcription error by automatically reading-in sample, container and user IDs.
Built-in density determination software guides you step-by-step through the density determination of solid, liquid or pasty substances.
A range of draft shields are available to protect your samples from environmental influences.
Power adapters and cords for 115V and 220V.
Below balance weighing devices for SB/SR/SG models.
Useful accessories for accurate moisture determination e.g. absorbent glass-fiber filters, aluminum sample pans.
Shield your balance from dust and accidental soiling with a protective cover. Transport cases protect your balance from damage during relocation.
The METTLER TOLEDO accessories for weighing modules make connection considerably easier and make it possible to construct a network of several weighing platforms.
Optional weighing pans for a range of different applications.
A Filter Weighing Kit on an Excellence Balance provides a state-of-the-art solution for determining particulate matter on filters down to 0.1 μg.
This comprehensive range of accessories for professional weight handling includes tweezers, weight forks, weight grips and leather gloves.
Safety enclosures are the latest generation of containment systems specifically designed to protect the analyst during the weighing process.
The MPS weighing pan protects against magnetic forces and allows magnetic stir bars to be used without affecting the weighing results.
The disposable weighing funnel SmartPrep is an innovative single use consumable to simply and securely weigh-in powders prior to volumetric sample preparation.