Calibration/Test Weights

If you own a weighing scale with external calibration, then without calibration weights you run the risk of having inaccurate data. Inscale offer a selection of calibration weight sets ranging from 1g to 50kg with stainless steel, cast iron or brass options available. When buying calibration weights, it’s important to buy from someone you can trust, as any irregularity will cause your scales to be invalid. Please also remember to keep your weights in good condition to ensure that they remain consistently accurate over time!

It can be confusing to know which calibration weight set is right for you, although they can be broken down into three separate groups as shown below:

  • M1 Class Test Weights: The M1 class weights are generally used when precision is not a top priority and we recommend using on a scale which has a readability of 0.1g and above. These are the most popular calibration weights for everyday use.
  • F1 Class Test Weights: These weights are usually found in laboratories and calibration houses and have a higher level of accuracy than the M1 despite being cheaper than the E1 and E2. They are used to calibrate balances that have a readability of 0.01-0.001g.
  • E1 & E2 Class Test Weights: Most commonly found in calibration centres for chemical and pharmaceutical companies, the E1 and E2 are the most precise calibration weights currently available. They calibrate balances with the finest level of accuracy which is anything below 0.0001g.
    • For any help in choosing your weights, please contact our team either by phone (01908 972 660) or live chat.

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  1. OIML Approved Calibration Weights | Inscale UK

    OIML Calibration Weights

    Model Capacities:
    1g to 5000g

    Starting at £10.00 £12.00

    Each OIML weight is an individual stainless steel weight that meet the requirements for testing to OIML standards. E2 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. Learn More
  2. OIML Calibration Weight Set | Inscale UK

    OIML Calibration Weight Sets

    Starting at £113.00 £135.60

    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. Learn More
  3. Kern E1 Class Milligram Calibration Test Weights

    E1 Class Milligram Calibration Test Weights

    Starting at £52.00 £62.40

    E1 class milligram calibration weight manufactured by Kern. E1 test weights are suitable for calibrating balances with a high level of precision, including precision and analytical balance models. Scheduled testing of your balances with such test weights helps to guarantee your quality requirements and to maintain your quality targets. Learn More
  4. Kern E1 Class Calibration Test Weight Milligram/Gram Box Sets

    E1 Class Calibration Test Weight Milligram/Gram Box Sets

    Starting at £655.00 £786.00

    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. Learn More
  5. Kern E1 Class Calibration Test Weight Gram Box Sets

    E1 Class Calibration Test Weight Gram Box Sets

    Starting at £910.00 £1,092.00

    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. Learn More
  6. Kern E1 Class Individual Polished Stainless Steel Calibration Test Weights

    E1 Class Individual Polished Stainless Steel Calibration Test Weights

    Model Capacities:
    1g to 50kg

    Starting at £83.00 £99.60

    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. These E1 calibration weights are constructed from polished stainless steel and are suitable for calibrating high-precision and analytical balance models. Learn More
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Registered office address: Inscale Ltd, 420 Silbury Boulevard, Milton Keynes, Bucks, MK9 2AF, UK
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