BS EN ISO 10140-1: 2010 + A1: 2012
“Measurement of sound insulation in buildings and of building elements. Part 3 – Laboratory measurement of airborne sound insulation of building elements”.
Formerly known as BS EN ISO 140-3: 1995 is the combined British, European and International Standard method of test for determining the acoustic performance of a door assembly, and can be used to quantify the effectiveness of a sealing system on any given door construction. There is no pass or fail to this test - results can be interpreted by using guidelines set out in BS EN ISO 717-1.
This link to British Standards Online may be of interest.
Relevant Lorient links: