Reference materials

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,

= (0,1 – 0,25) %

(1×10-4 – 100) S/m,

= (0,5 – 1) %

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*

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) %
U= (0,2 - 0,3) %

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
(5,0 – 15,0) %

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) %