Dear colleagues,
It is our pleasure to invite you to take part in proficiency testing № PTS 22/08-2 by means of an interlaboratory comparison.
The subject of testing will be product “Aggregates (fine or all-in)” 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
Aggregates (fine or all-in)
Testing
| Code of the standаrd | Name of the standard | Parameter |
|---|---|---|
*EN 1097-5 |
Tests for mechanical and physical properties of aggregates - Part 5: Determination of the water content by drying in a ventilated oven |
Water content |
*EN 1097-3 |
Tests for mechanical and physical properties of aggregates - Part 3: Determination of loose bulk density and voids |
Loose bulk density |
*EN 933-8+А1 |
Tests for geometrical properties of aggregates - Part 8: Assessment of fines - Sand equivalent test |
Sand equivalent |
*EN 933-9 |
Tests for geometrical properties of aggregates - Part 9: Assessment of fines - Methylene blue test |
Methylene blue value |
*EN 933-1 |
Tests for geometrical properties of aggregates - Part 1: Determination of particle size distribution - Sieving method |
Particle size distribution |
*EN 933-1 |
Tests for geometrical properties of aggregates - Part 1: Determination of particle size distribution - Sieving method |
Fines content |
* All tests will be carried out according to the last valid versions of the pointed standards!