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Mass Calibration Laboratory

Laboratory Duties

  • Maintain the traceability of the national mass measurement standards
  • Disseminate mass calibration to other calibration laboratories and industries
  • Give training
  • Provide consultancy and support

Calibration Room

Room No.: 012
Area: 16 m²

Comparators

The laboratory has 6 digital electronic mass comparators (non-automatic) with different resolutions ranging from 0.0001 mg to 0.01 g.

Calibration Bench

  • Seven stable granite stone tables
  • 2 stainless steel tables for comparator balance stability

Standards

OIML E2 class standard weights (x2)
Range: 1 mg to 10 kg 
OIML F2 class working standard weights (x1)
Range: 1 mg to 10 kg 
OIML E2 class single standard weights (x3)
Nominal value: 20 kg 
OIML E1 class standard weights (x1)
Range: 1 mg to 5 kg Not yet accredited 
Other additional weights 

Equipment

Sartorius Susceptometer
Range: 2g to 50 kg
Checks the magnetic properties of test weights

Environmental Condition Data Logger
Controls Temperature, Pressure and Humidity (T, P & H)

Scope of Accreditation & CMC

  • OIML class F1 and below — Range: 1 mg to 10 kg
    Determines conventional mass of weights using substitution weighing method (ABBA weighing cycle) in accordance with OIML R111-2004. 
  • Free nominal value weights — Range: 1 mg to 10 kg
    Determines the true mass of the weights. 
  • Accredited by the German Accreditation Body (DAkkS) based on ISO/IEC 17025:2005 — currently preparing for reassessment in accordance with ISO/IEC 17025:2017.

Future Plans

  • Upgrade scope of accreditation from 10 kg to 20 kg F1 class weights (three 20 kg E2 class standard weights with recent certificates already available)
  • Upgrade from F1 to E2 class weights — E1 class standard weight (range 1 mg to 5 kg) already acquired
  • Fulfil facilities, accommodation and training requirements for E2 class weight accreditation
  • Participate in sub-regional interlaboratory comparisons and register new as well as best CMC values

Interested in our Mass Calibration services?

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