Calibration Weights

Calibration Weights

Calibration Weights are used when calibrating weighing scales and balances to ensure consistent weighing performance and accuracy. Choose from our selection of calibration test weights and weight sets ranging from 1g to 50kg with stainless steel, cast iron and brass variations available.

The different test weight options available can be confusing and you might well ask what the difference is between an M1 and an F1 weight, or why you might use one rather than the other. We have compiled a brief overview of the calibration weights we offer, and additional information on the importance and how to calibrate a balance with weights within our related articles below:  

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

F1 Class Test Weights: Common weights used for standard 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: The most precise test weights available. These weights should be used on balances and scales with very fine resolutions, such as micro and analytical balances. Most commonly used in test and calibration houses and within the chemical and pharmaceutical industries.

Guide to Calibration Weights - Free PDF Download

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  1. Kern E1 Class Individual Polished Stainless Steel Calibration Test Weights

    E1 Class Single 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
  2. Kern E1 Class Milligram Calibration Test Weights

    E1 Class Single 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
  3. OIML Cast Iron Test Weights | Inscale UK

    OIML Cast Iron Weights

    Starting at £47.00 £56.40

    Cast iron scale calibration weights are available in OIML M1 class, they offer higher capacities to meet the needs to calibrate larger scales such as industrial platform and floor scales. Learn More
  4. 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
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