Proficiency Testing and other Comparisons for Laboratories

TESTING - Projects for Proficiency Testing (PT) and Interlaboratory Comparisons (ILC)
CALIBRATION - Projects for Proficiency Testing (PT) and Interlaboratory Comparisons (ILC)

Interlaboratory comparison (ILC) and proficiency testing (PT) represent significant elements in the integrated evaluation of the technical competence of laboratories.
SNAS considers the participation of laboratories in ILC and PT projects as an important means of verification of the fulfilment of accreditation criteria of accredited laboratories.

In connection with ILC and PT SNAS has issued several documents, such as PL-23 and MSA-L/08 to check activities in this field.

SNAS requires laboratories to take an active part in ILC and PT projects organised in Slovakia or on an international level by EA, or by other accreditation systems in compliance with the applicable EA regulations.

In cases where proficiency testing is impractical, SNAS has accepted rules for ensuring the acceptable level of measurement traceability as declared in MSA-L/08.

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Current International Projects for Proficiency Testing (PT) and Interlaboratory Comparisons(ILC)


TESTING - Projects for Proficiency Testing (PT) and Interlaboratory Comparisons (ILC):


NEW! PTP Organizer - Fine Finish Proficiency Testing Provider
  • Program: Program'
  • Registration Form: Registration
  • Agreement: Agreement'

NEW! PTP Organizer - CompaLab
NEW! PTP Organizer - IFA-Tulln
Program in the field of the chemical-physical, microbiological and organoleptic analytic of “animal feed”, “non-alcoholic beverages” and “milk powder”
Program in the field of egg products and cereal products
PT provider - The Institute for Interlaboratory Studies Spijkenisse, The Netherlands
PT provider in food, feed, manure and beverages
  • Organizer: DUCARES
  • Company flyer: Company

PT Provider UCLSB
CompaLab proficiency tests in the field of metallurgy and steels for concrete
  • Organizer: CompaLab
  • PT: chemical analysis on non alloyed, alloyed and stainless steels, on copper alloys and ferro alloys; metallographic tests (size of grain, content in non metallic inclusions) on steels and copper alloys; intergranular corrosion tests on stainless steels; roughness of a metallic surface; gloss and colorimetry of surfaces; tests of non-organic (zinc coating) and organic coatings (paints): pull-off test, cross-cut test, salt spray corrosion test, SO2 test, resistance to humidity, to immersion in water and to UV exposure; Charpy test at room and low temperature; Brinell, Vickers, Rockwell hardness tests, including low loading Vickers tests; tensile tests at room and high temperature, on sample to be machined, on flat steel, on stainless steel, on pipe; tests of concrete reinforcing steels (bars and welded fabrics), including fatigue testing; tests of concrete prestressing steels, including stress corrosion, relaxation and deflected tension

  • Info: Proficiency testing programs


PT for CHC and BTEX

PT for pesticides and metabolites in accordance with the Drinking Water Ordinance
  • Organizer: Umweltbundesamt GmbH
  • Program: PT'


Program to conduct technical projects for interlaboratory comparisons in the period 2015 - 2019

Proficiency Testing programs and external reference materials for laboratories concerned by quality control

  • Organizer: B.I.P.E.A. Proficiency Testing provider, Paris - FRANCE

  • Brochure: B.I.P.E.A.

  • Info: http://www.bipea.org


Proficiency testing program in in the field of microbiological analysis

  • Organizer: DRRR (Deutsches Referenzbüro für Lebensmittel-Ringversuche und Referenzmaterialien GmbH)

  • Info: http://www.drrr.de/en


The Union of Construction Laboratory Specialists of Bulgaria (UCLSB)

ILT- the Proficiency Testing on “Tensile strength and elongation at break test of PVC cables according to standards IEC 60227-2 and IEC 60811-1-1, chapter 9 (code ILT-S-03)
  • Organizer: ILT – Interlaboratory Test

  • Info: For more information about the Proficiency Testing on “Tensile strength and elongation at break test of PVC cables according to standards IEC 60227-2 and IEC 60811-1-1, chapter 9 (code ILT-S-03) please visit http://www.PTinterlaboratory.com


IFA- Test Systems Interlaboratory Comparisons for Water Analysis
PT Programs
  • Organizer: LGC, Quality Management (QM) a Aquacheck
  • Information: Info

Important links:

European PT Information System - EPTIS
Institute for Interlaboratory Studies - Program of PT
QM - Info
Aquacheck - Info
LGC - Info
NMi - Info - Program of PT in the field of water & soil analysis

University of Natural Resources and Applied Life Sciences, Vienna - IFA test, BOKU - Proficiency Testing Scheme for Water Analysis

Analytical Products Group, Inc. - Info - Program of PT in the field of wastewater analysis, drinking water analysis, soil and hazardous waste

Calibrum - Info - ILC for testing laboratories in building industry

Sigma-Aldrich RTC - Info - Akkredited Environmental PT Provider


CALIBRATION - Projects for Proficiency Testing (PT) and Interlaboratory Comparisons (ILC):


Program ILC of Slovak Legal Metrology (accredited PT Provider)
Program ILC of Czech Legal Metrology (accredited PT Provider)
NMi (accredited PT Provider) - http://www.nmi.nl
ATG Ltd. (accredited PT Provider for NDT laboratories) - http://www.atg.cz

Important links:

European PT Information System - EPTIS

ILAC Policy for Participation in Proficiency Testing Activities - ILAC P9: 06/2014