Download BS EN 772-1 PDF: European Standard for testing and specifications of masonry units, including bricks, blocks, and stones. 54.254.164.3 BS EN 772-1:2011+A1:2015 - BSI Knowledge

The demand for this specific document stems from the regulatory requirements in the construction industry.

This is the most detailed section:

Without following the exact procedures in the , test results become non-comparable and legally indefensible.