Copper and copper alloys — Determination of tellurium content — Part 1: Low tellurium content — Flame atomic absorption spectrometric method (FAAS)
Document status: Active
Fertilizers — Extraction of phosphorus soluble in 2 % formic acid
Document status: Active
Fertilizers — Extraction of phosphorus soluble in 2 % citric acid
Document status: Active
Fertilizers — Extraction of soluble phosphorus according to Petermann at 65 °C
Document status: Active
Fertilizers — Extraction of soluble phosphorus according to Petermann at ambient temperature
Document status: Active
Fertilizers — Extraction of phosphorus soluble in Joulie's alcaline ammonium citrate
Document status: Active
Fertilizers — Determination of the fineness of grinding of soft natural phosphates
Document status: Active
Fertilizers — Extraction of total sulfur present in various forms
Document status: Active
Fertilizers — Extraction of water soluble sulfur where the sulfur is in various forms
Document status: Active
Sludge, treated biowaste and soil — Determination of specific electrical conductivity
Document status: Active
