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Weights

M1 Class test weights are the most widely used test weight class on the market today. These weights are used to calibrate scales and balances were exact precision is not necessary. All class III scales use these weights for reference and calibration.

F1 class test weights are the common weights used for precision balances and scales. These weights have a high degree of accuracy, but more cost effective than the E1 and E2 classes. Mainly used in laboratories, calibration houses and quality control areas.

E2 Class test weights are the second most precise test weights available. These weights should be used on scales with very fine resolutions. Most commonly used in test and calibration houses and within the chemical and pharmaceutical industries.

Still unsure whether you need calibration weights for your scale? Take a look at our article on the importance of calibration.

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  1. £113.00  (Ex.VAT)

    RRP £120.00 (Excl.VAT)

    OIML weight sets are a complete set of test weights that can meet the requirements for testing to OIML standards. E2 and F1 weights offer the highest accuracy required for analytical and precision balances, M1 weights offer the lowest accuracy but are more affordable and are ideal for compact balances and bench scales.

  2. £390.00  (Ex.VAT)

    Correctly selected test weights with calibration certificate are the pre-requisite for ensuring that your balances and scales are not only correctly adjusted, but also correctly calibrated. Scheduled testing of your balances with such test weights helps to guarantee your quality requirements and to maintain your quality targets.

  3. £6.00  (Ex.VAT)

    Correctly selected test weights with calibration certificate are the pre-requisite for ensuring that your balances and scales are not only correctly adjusted, but also correctly calibrated. Scheduled testing of your balances with such test weights helps to guarantee your quality requirements and to maintain your quality targets.

  4. £5.00  (Ex.VAT)
    Max Capacity Range 1g to 10kg

    Correctly selected test weights with calibration certificate are the pre-requisite for ensuring that your balances and scales are not only correctly adjusted, but also correctly calibrated. Scheduled testing of your balances with such test weights helps to guarantee your quality requirements and to maintain your quality targets.

  5. £5.60  (Ex.VAT)
    Max Capacity Range 1g to 10kg

    Correctly selected test weights with calibration certificate are the pre-requisite for ensuring that your balances and scales are not only correctly adjusted, but also correctly calibrated. Scheduled testing of your balances with such test weights helps to guarantee your quality requirements and to maintain your quality targets.

  6. £69.00  (Ex.VAT)

    Correctly selected test weights with calibration certificate are the pre-requisite for ensuring that your balances and scales are not only correctly adjusted, but also correctly calibrated. Scheduled testing of your balances with such test weights helps to guarantee your quality requirements and to maintain your quality targets.

  7. £69.00  (Ex.VAT)

    Correctly selected test weights with calibration certificate are the pre-requisite for ensuring that your balances and scales are not only correctly adjusted, but also correctly calibrated. Scheduled testing of your balances with such test weights helps to guarantee your quality requirements and to maintain your quality targets.

  8. £69.00  (Ex.VAT)

    Correctly selected test weights with calibration certificate are the pre-requisite for ensuring that your balances and scales are not only correctly adjusted, but also correctly calibrated. Scheduled testing of your balances with such test weights helps to guarantee your quality requirements and to maintain your quality targets.

  9. £69.00  (Ex.VAT)

    Correctly selected test weights with calibration certificate are the pre-requisite for ensuring that your balances and scales are not only correctly adjusted, but also correctly calibrated. Scheduled testing of your balances with such test weights helps to guarantee your quality requirements and to maintain your quality targets.

  10. £12.00  (Ex.VAT)
    Max Capacity Range 1g to 10kg

    Correctly selected test weights with calibration certificate are the pre-requisite for ensuring that your balances and scales are not only correctly adjusted, but also correctly calibrated. Scheduled testing of your balances with such test weights helps to guarantee your quality requirements and to maintain your quality targets.

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Weights Help

Q: How to choose calibration weights?

A: There are many different types of weights that are used for different applications and this is not easy to answer briefly, but a good basic guide will follow this rough principle, scales that have a resolution of 0.1g upwards should be M1 Class, 0.01g to 0.001g then F1 Class weights, E2 and E1 for less than 0.0001g.

Q: How to clean calibration weights?

A: Weights should routinely be dusted before use, using a clean, soft-haired brush but they should not be more extensively cleaned unless it is absolutely necessary. More extensive cleaning may adjust the weight, so before cleaning measure the weight and again after cleaning to ensure it has not gone out of tolerance.

Q: How to store calibration weights?

A: Precision weights should be stored in individual boxes, wooden or plastic to protect them from dust and atmospheric pollution, and should also be stored in a suitable cupboard. Sets of weights used regularly should be stored in a suitable sized wooden or plastic box with individual compartments for each weight. Weights should not be stored on shelves or racks without adequate protection from the environment.

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