Slovak National Accreditation Service

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):

• Program:
• Registration Form:
• Agreement:

• List of 2018 PT Programs: http://www.compalab.org/pages/what-ilc-are-proposed/

• Info: http://www.ifatest.eu

• Organizer: DRRR GmbH
• Program:
• Info: http://www.drrr.de/en/catalogue/ and in Online Data Information Network https://odin.drrr.de/

• Organizer: DRRR GmbH
• Program:
• Info: http://www.drrr.de/en/catalogue/

• Info: http://www.iisnl.com/

• Organizer: DUCARES
• Company flyer:

• Info: http://ptprovider.sslsb.org
• Program: , ;

• 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

• Organizer: Umweltbundesamt GmbH
• Info: http://www.umweltbundesamt.at/fileadmin/site/leistungen/Umweltanalytik/ringversuche/Folder_Ringversuche_Umweltanalytik_EN.pdf and http://www.umweltbundesamt.at/fileadmin/site/leistungen/Umweltanalytik/ringversuche/Proficiency_Testing_Scheme.pdf
• Registration: http://www.umweltbundesamt.at/en/services/laboratory_services/interlaboratory_comparison/en_prof-tests_matrices/

• Organizer: Umweltbundesamt GmbH
• Program:

• Organizer: INTERPROJECT Ltd.
• Program in the period 2015 - 2019:
• Info: http:// www.inter-project.bg

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


• Brochure:


• Info: http://www.bipea.org

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


• Info: http://www.drrr.de/en

• Info: http://www.ptprovider.sslsb.org

• 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

• Organizer: IFA- Tulln


• Info: For more information about Proficiency Testing Scheme for Water Analysis please visit http://www.ifatest.eu, http://www.ifa-tulln.ac.at, http://www.bocu.ac.at

• Organizer: LGC, Quality Management (QM) a Aquacheck
• Information: