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pH Measurement and Electrochemistry

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  Weighing

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Calibration Masses

Certification

VWR International offers pre-certified calibration masses traceable to NAMAS. These high quality polished stainless steel weights comply with OIML specifications and are supplied in individual serial numbered boxes with handling glove or tweezers according to the mass size.


Recertification

VWR International is now able to offer a weight recertification service on all weight classes. The certification is NAMAS, for further details please phone 01202 664434.


European Certified Class E2 Calibration Weights

VWR International branded individual weights are manufactured to the OIML recommendations, with COFRAC certificate of calibration. Under the European co-operation for Accreditation (EA) Agreement, this certificate is accepted by, and equivalent to NAMAS (UKAS). Weights are non-magnetisable stainless steel, in plastic boxes for 1mg to 200g, and wooden boxes for 500g and above.


NAMAS Certified Class E2 Calibration Weights

BDH branded individual weights with standard certificate.

Uncertified Class F1 Calibration Weights

VWR International branded weights which are non-magnestisable stainless steel, in plastic boxes for 1mg to 200g, and wooden boxes for 500g and above.

European Certified Class F1 Calibration Weights

VWR International branded individual weights, manufactured according to OIML recommendations, with COFRAC certificate of calibration. Under the European co-operation for Accreditation (EA) Agreement, this certificate is accepted by, and equivalent to NAMAS (UKAS). Weights are non-magnetisable stainless steel, in plastic boxes for 1mg to 200g and wooden boxes for 500g and above.

 
In addtion VWR International offers a range of calibration weights from ASTM and OIML. Please see our online catalogue for more details.