Proficiency Testing № PTS 20/10

Dear colleagues,

It is our pleasure to invite you to take part in proficiency testing № PTS 20/10 by means of an interlaboratory comparison, including testing and sample taking with subsequent testing.

Subject of testing will be the product “Bitumen” under standard methods and parameters, which are given below.

Subject of sample taking will be “Aggregates (fine or all in one material)” according to EN 932-1:2000, item 8.8 with subsequent testing for determination of the property “bulk density” according to EN 1097-3:2000.

Bitumen

Code Name Characteristics

БДС EN 1426:2015

Bitumen and bituminous binders. Determination of the needle penetration.

no accreditation

Penetration (na)

БДС EN 1427:2015

Bitumen and bituminous binders. Determination of the softening point. Ring and Ball method.

no accreditation

Temperature of softening (na)