Laboratory for reference materials

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The laboratory for reference materials and precious metals is part of Bureau of Metrology, Ministry of economy.
The main task of the laboratory is to develop and maintain the standard for calibration through comparison with other National laboratories.
The laboratory dispose with equipment for determination and making analyses of reference materials, sampling, assaying and marking goods of precious metals. The group of precious metals consists of: gold, silver and platinum.

The laboratory for reference materials is capable of calibrating the following reference standards:

• • Areometers for determination density – measuring range from 0,600g/cm³ to 1,960 g/cm³
  • with accuracy of 0,00005 g/cm³
  • Hydrometers – measuring range from 0,650 g/cm³ to 1,250 g/cm³ with accuracy of
  • 0,00005 g/cm³
  • Alcoholmeters –measuring range from 0,5% to 100% with accuracy of 0,1%.
  • Urinometers – measuring range from 1,00 g/cm³ to 1,06 g/cm³ with accuracy of 0,00005 g/cm³
  • Lactometers – measuring range from 1,014 g/cm³ to 1,040 g/cm³ with accuracy of 0,00005 g/cm³
  • Winemeters measuring range from 1,00 g/cm³ to 1,13 g/cm³ with accuracy of 0,00005 g/cm³

For testing and marking goods made from alloys of precious metals, the laboratory is equipped with tools and stamps:

• • Fume cupboard with capacity to 1600m3/h
  • Electric furnace for cupellation (maximum temperature to 1400ºC)
  • Hand-operated, motorized bench rolling mills
  • Bath with sand
  • Electronic balance from 4g to 1,2kg
  • Balance with accuracy to 0,0001g
  • Set of testing bars for gold for 585‰, 750‰, 840‰ and 950‰
  • Set of testing bars for silver for 800‰, 900‰ and 950‰
  • Testing acids for gold and silver with different composition
  • Stone for test with scratching
  • Anvil and hammers for marking
  • Press for marking
  • Seals for marking goods of gold, silver and platinum

 

Julijana Pecalevska

julijana.pecalevksa@bom.gov.mk

Contact number: 00389 2 403-676 local: 119