Water quality; Determination of Kjeldahl nitrogen; Method after mineralization with selenium
Edition 1984-05

Chromium ores; Determination of total iron content; Titrimetric method after reduction
Edition 1985-11

Water quality; determination of phenol index; 4-aminoantipyrine spectrometric methods after distillation
Edition 1990-05

Fertilizers; Determination of ammoniacal nitrogen content; Titrimetric method after distillation
Edition 1981-05

Fertilizers; Determination of total nitrogen content; Titrimetric method after distillation
Edition 1984-06

Water quality - Determination of fluoride - Part 2: Determination of inorganically bound total fluoride after digestion and distillation
Edition 1994-10

Animal feeding stuffs - Determination of soluble nitrogen content after treatment with pepsin in dilute hydrochloric acid
Edition 1997-08

Ammonium sulphate for industrial use; Determination of ammoniacal nitrogen content; Titrimetric method after distillation
Edition 1975-07

Aluminium and aluminium alloys; Determination of chromium; Spectrophotometric method using diphenylcarbazide, after extraction
Edition 1976-12

Manganese ores and concentrates; Determination of total iron content; Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method
Edition 1985-12