Methods of test for masonry units - Part 5: Determination of the active soluble salts content of clay masonry units; German version EN 772-5:2016+AC:2017
Edition 2018-12

Water quality; determination of anionic surfactants by measurement of the methylene blue index MBAS (ISO 7875-1:1984, modified); German version EN 903:1993
Edition 1994-01

Surface active agents - Determination of pH value of solutions or dispersions; German version EN 1262:2003
Edition 2004-01

Surface active agents - Colorimetric characterization of optically clear coloured liquids (products) as X, Y, Z tristimulus values in transmission; German version EN 1557:1996
Edition 1997-03

Surface active agents - Determination of wetting power by immersion (ISO 8022:1990, modified); German version EN 1772:2000
Edition 2000-08

Surface active agents - Fatty alkyl dimethyl amine oxides - Determination of the amine oxide content; German version EN 1791:1997
Edition 1997-03

Surface active agents - Determination of cloud point of non-ionic surface active agents obtained by condensation of ethylene oxide; German version EN 1890:2006
Edition 2006-09

Surface active agents - Determination of the total polyethylene glycol content of non-ionic surface active agents (EO adducts) by HPLC/GPC; German version EN 12139:1999
Edition 1999-04

Surface active agents - Determination of stability in hard water; German version EN 12458:1999
Edition 1999-04

Surface active agents - Determination of the polyethylene glycol content according to molar mass in non-ionic surface active agents (ethoxylated) by HPLC/ELSD; German version EN 12582:1999
Edition 1999-05