Proficiency testing

Laboratory participation in the inter-laboratory comparisons is one of the requirements of the GOST ISO/IEC 17025:2005-2009 international standard for quality assurance of the test results.

EZOCM JSC has been accredited as a proficiency testing provider of laboratory qualification validations for compliance with the ISO 17043:2010. The list of proficiency test items includes refined precious metals; alloys based on precious metals; secondary waste, mineral raw materials containing precious metals; solutions containing precious metal ions. Samples are tested for mass fraction (mass concentrations) of elements. 

Proficiency testing (PT) programs realized by EZOCM in 2022

PT indexTest itemMatrixRanges of element mass fractionTest material form and massDeadline for participation applicationDeadline for result providing
OCM-30-2022Alloyed goldAu-Ag

Au – (90‑95) %;

Ag – (5‑10) %.

Rolled plates (thickness 0.2‑0.3 mm); mass 3 g*1st April 20221st July 2022
OCM-31-2022Waste catalystSiO2+Al2O3

Pt – (0,1‑0,5) %;

Pd – (0,1‑0,5) %;

Rh – (0,01‑0,05) %.

Powder (particle size less than 100 μm); mass 20 g*1st May 20221st August 2022
OCM-32-2022Refine platinum


ImpuritiesRolled plates (thickness 0.3‑0.4 mm); mass 3 g*1st May 20221st August 2022
OCM-33-2022Electronic scrap


Au – (0,5‑1,0) %;

Ag – (0,05‑0,50) %;

Pd – (0,01‑0,10) %;

Pt – (0,005‑0,015) %.

Chips (thickness about 1 mm); mass 10 g*1st June 20221st September 2022


Au – (99,0‑99,9) %Rolled plates (thickness 0.2‑0.3 mm); mass 3 g*1st July 20223rd October 2022
OCM-35-2022Silver scrap


Ag – (75‑90) %;

Pd – (10‑25) %.

Rolled plates (thickness 0.2‑0.3 mm); mass 5 g*1st July 20223rd October 2022

* or more on the request.


For PT programs OCM-34-2022 and OCM-35-2022 the test material in form of disk (diameter 20 mm, thickness 2 mm) can be provided on the request.


For more information, please contact us:

Elena Anchutina, PT Programs Coordinator: 

Phone: +7 (343) 311-47-21, e-mail:

Kristina Belousova, Head of Overseas Division:

Phone: +7 (343) 311-46-29, e-mail:

To establish a long term plan of proficiency testing, please fill in the questionnaire, which includes a list of items and test characteristics to organize proficiency testing programs in which your lab would like to take part and return it to us via e-mail: or by letter to the following postal address:

attn: Maria Lisienko, Head of Central Analytical Laboratory, EZOCM JSC, 131 Uspensky Prospect, Verkhnyaya Pyshma, Sverdlovsk Region, 624097, Russia. 

Provider’s Accreditation Certificate AAC.РТР.00315