This European Standard describes the method for determining the degree of acidity of a soil to be used to assess its aggressiveness class according to EN 206. The degree of acidity according to Baumann-Gully is a measurement of the ion content exchangeable hydrogen that the humic elements of a soil can release.
NF P18-465:2014 Referenced Document
EN 206 Concrete - Specification, performance, production and conformity
EN ISO 1042 Laboratory Glassware - One-Mark Volumetric Flasks