SE "UKRMETRTESTSTANDART" produces Certified Reference Materials (CRMs) of composition and properties of substances and materials, including over 600 types calibration gas mixtures.
In 2021, СOOMET Quality Forum confirmed compliance of SE "UKRMETRTESTSTANDART" Quality Management System with ISO 17034:2016 with regard to CRMs of gases, electrolytic conductivity, pH, substances of high purity, organic solutions, food. Also SE "UKRMETRTESTSTANDART" produces other CRMs, in more detail in Table 1.
Table 1
Physical quantity |
Matrix |
Metrological characteristics |
Electrolytic conductivity |
Aqueous solutions |
(1×10-4 – 60) S/m, uA= (5×10-3 – 1×10-2) % uB= (6×10-3 – 3×10-2) % |
(1×10-4 – 60) S/m, U = (0,1 – 0,25) % |
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(1×10-4 – 100) S/m, U = (0,5 – 1) % |
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рН Certified value given at (25,00 ± 0,02) °С. Expanded uncertainty includes the uncertainty contribution due to the Bates-Guggenheim convention |
Aqueous solutions |
(1,5 – 10,5); U=0,014* |
(1 – 14); U=0,02* |
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Ethanol mass fraction |
Water solution |
(0,5 – 5,0) g/kg U = 0.9% |
Refractive index
|
Organic liquid
|
(1,33 – 1,64) ; U= (1×10-5 – 1×10-4) |
Spectral transmittance (optical density) |
Aqueous solutions |
(0,5 – 95) % (0,02 – 2,3); U= (0,05 – 0,5) % |
Whiteness |
Flour |
(10 – 65) conditional units of РЗ-БПЛ; U= (1,0 – 1,5) conditional units of РЗ-БПЛ |
Viscosity |
Newtonian liquids |
(4×10-7 –1×10-1) m2/s; U=(0,3 – 0,6) % |
Density |
Water-alcohol solutions, petroleum products |
(650 – 2000) kg/m3; U= (0,1 – 0,008) kg/m3 |
Mass fraction of sulfur |
petroleum products |
(0,01 – 5,0) % U= (0,001 – 0,2) % |
Mass fraction of fat and moisture |
Soy, sunflower, rapeseed, oil cake and shrot |
fat (2,0 – 50,0) % U= (0,2 - 0,3) % moisture (5,0 – 10,0) % |
Mass fraction of fat and protein, dry milk residue, density |
Milk and dairy products |
Mass fraction of fat (0,1 – 35,0) % U= 0,03 % Mass fraction of protein (0,5 – 10,0) % U= 0,07 % dry milk residue U= 0,2 % density 1000 – 1040 kg/m3 U= 0,2 kg/m3 |
Flash point in closed and open crucible |
petroleum products |
20 – 350 оС U= (1 – 2) оС |
Mass fraction of nitrogen (protein) and moisture |
Grain, its processed products, seeds and food products |
protein (8 – 18) % U= (0,20 - 0,25) % moisture (5 – 45) % U= (0,2 - 0,3) % |
Falling number |
Wheat and rye grain and flour |
(60 – 600) U= (1 – 5) % |