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Home Laboratory Weighing Test Weights Lab Weights - Calibration & Testing
Home Laboratory Weighing Test Weights Lab Weights - Calibration & Testing

Lab Weights - Calibration & Testing

High Quality Laboratory Weights for Balances

Lab weights refer to standardized weighing units used for calibration and metrological testing of laboratory balances. They are an important tool for maintaining accuracy and reliability as well as ensuring that measurements are precise and reproducible. Laboratory weights from METTLER TOLEDO cover all OIML and ASTM Classes and are made of corrosion-resistant stainless steel for a lifetime of stable and accurate weighing results.
Single Test Weights for Scales and Balances

Single Lab Weights

High-quality OIML and ASTM laboratory weights protected in a robust and easy-to-clean plastic container.
Weight Sets

Sets of Laboratory Weights

Expertly manufactured OIML and ASTM lab weight sets supplied in a solid easy-to-clean aluminum or plastic case.
Reference Weights and Microgram Weights

Laboratory Reference Weights and Microgram Lab Weights

Lab weights for highest metrological performance and specialized applications.
CarePac®

CarePac®

Unique solution for convenient routine testing with OIML and ASTM laboratory weights.

Useful Related Links

GWP Recommendations

How to Select the Correct Calibration Lab Weight

Take advantage of our free GWP® Recommendation service to ensure you select the right lab weight in the correct weight class to meet your individual accuracy requirements.

Lab Weight Accessories

Accessories for Calibrated Lab Weights

Handle your calibration lab weights like a professional with ergonomic tweezers, weight forks, clean-room gloves, and cleaning cloths.

Lab Weight Calibration Service

Lab Weight Calibration Services

In our global network of accredited laboratories, your calibration lab weights are expertly cleaned, calibrated, and adjusted, and returned to you promptly. The results are documented in the weight calibration certificate.

Guide to Routine Testing

Download our free guide to learn how to test the performance of your balance or scale. Find out how often to test, which tests to use, and which lab weights will ensure your weighing results remain accurate.

Video: 10 Lab Weight Handling Tips

Watch the video for valuable tips on how to handle, clean and store your calibration lab weights. Correct handling protects the integrity of your weights.

Video: Overview of Our Lab Weight Portfolio

We show you how we can help you choose the right lab weight, explain why you might be better off with a CarePac™ or a lab weight set, and highlight how you benefit further by choosing METTLER TOLEDO.

Do You Want Your Balance to Perform at Its Best? Get It Serviced by the Market Leader

Do You Want Your Balance to Perform at Its Best? Get It Serviced by the Market Leader

What are lab weights?

Lab weights are stainless steel knob or wire weights from 1mg up to 50Kg in the OIML classes E1-M1 used for testing and calibration of balances in laboratories.

Where are lab weights used?

As the name indicates, lab weights are designed for lab balances, as compared to industrial weights, which are heavier and suitable for harsher environment to use with industrial scales.

How should lab weights be cleaned?

If a weight contains significant amounts of dirt that cannot be removed with a brush or cleaning tissue, the weight or some part of it can be washed with clean alcohol or distilled water. After weights are cleaned with solvents, they must be stabilized.

What are some of the best practices for lab weights handling?

When handling lab weights, keep in mind the following points:
 
  • Store weights near the balance
  • Handle weights with care
  • Do not touch weights with bare hands
  • Do not forget periodic recalibration
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