PT Provider PTS Bulgaria invites you to take part in proficiency testing scheme № 25/09-T-1 by means of an interlaboratory comparison.
The PT scheme is in accordance with ISO/IEC 17043:2023 and includes the laboratory activity “Testing” of Fine Aggregates under standard methods and parameters, indicated in the table below.
The product and the parameters are under the scope of accreditation of PT Provider PTS Bulgaria at PTS Bulgaria Ltd.
The submission period is until 17 November 2025.
⚠️After filling out and submitting the application in pdf format, the date of application will be considered the date of receipt of the completed application at the e-mail specified in it!
⚠️When applying through the electronic form on the website /electronic application/, the date of receipt of the automatic e-mail with the data filled in by you is considered the date of application.
You may find more details in the Detailed PT plan and the Invitation for participation in section “Documents for participation”.
Item of the proficiency testing
FINE AGGREGATES
TESTING
| Code of the standаrd | Parameter | Number of participations |
|---|---|---|
*EN 1744-1+A1, clause 7 – Volhard method (reference method) |
Water-soluble chlorides content (Volhard ) (two or three determinations if Δ > 2Sr |
|
*EN 1744-1+A1, clause 9 – Mohr method (alternative method) |
Water-soluble chlorides content (Mohr) (two or three determinations if Δ > 2Sr) |
|
*EN 1744-1+A1, clause 11.1 – Acid digestion method (reference method) |
Total sulfur content (two or three determinations if Δ > 2Sr) |
*The tests will be carried out according to the last valid versions of the indicated standards!
Note: The product and the parameters are under the scope of accreditation of PT Provider PTS Bulgaria.