Proficiency Testing № PTS 23/01

Dear colleagues,

It is our pleasure to invite you to take part in proficiency testing № PTS 23/01 by means of an interlaboratory comparison.

The subject of testing will be product “Hardened concrete” under standard methods and parameters, pointed below.

The product and the parameters are under the scope of accreditation of PT Provider PTS Bulgaria at PTS Bulgaria Ltd.

You may find more details in the Detailed PT plan and the Invitation for participation in section “Documents for participation”.

Subjects of the proficiency testing

Hardened concrete


Code of the standаrd Name of the standard Parameter

*EN 12390-3

Testing hardened concrete - Part 3: Compressive strength of test specimens

Compressive strength

*EN 12390-7

Testing hardened concrete - Part 7: Density of hardened concrete


* All tests will be carried out according to the last valid versions of the pointed standards!

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