Soil quality - Determination of effective cation exchange capacity and base saturation level using barium chloride solution (ISO 11260:1994); German version FprEN ISO 11260:2010
Soil quality - Determination of soil microbial biomass - Part 1: Substrate-induced respiration method (ISO 14240-1:1997); German version EN ISO 14240-1:2011— 12 стр.
Soil quality - Determination of effective cation exchange capacity and base saturation level using barium chloride solution (ISO 11260:1994+Cor. 1:1996); German version EN ISO 11260:2011— 16 стр.