Organo-mineral fertilizers - Extraction of phosphorus, which is soluble in neutral ammonium citrate (Endorsed by Asociación Española de Normalización in May of 2022.)
Edition 2022-05-01

STARCHES AND DERIVED PRODUCTS. DETERMINATION OF TOTAL PHOSPHORUS CONTENT. SPECTROPHOTOMETRIC METHOD. (ISO 3946:1982).
Edition 1995-12-19

Water quality - Determination of phosphorus - Ammonium molybdate spectrometric method (ISO 6878:2004)
Edition 2005-01-19

WATER QUALITY. DETERMINATION OF SELECTED ORGANIC NITROGEN AND PHOSPHORUS COMPOUNDS. GAS CHROMATOGRAPHY METHODS. (ISO 10695:2000)
Edition 2000-09-28

Water quality - Determination of orthophosphate and total phosphorus contents by flow analysis (FIA and CFA) - Part 1: Method by flow injection analysis (FIA) (ISO 15681-1:2003)
Edition 2005-12-28

Water quality - Determination of orthophosphate and total phosphorus contents by flow analysis (FIA and CFA) - Part 2: Method by continuous flow analysis (CFA) (ISO 15681-2:2018)
Edition 2020-10-21

Textiles - Determination of certain flame retardants - Part 2: Phosphorus flame retardants (ISO 17881-2:2016)
Edition 2016-09-28

Chemical analysis of ferrous materials - Determination of phosphorus in non-alloyed steels and irons - Molybdenum blue spectrophotometric method
Edition 2007-06-13

Fat and oil derivatives. Fatty Acid Methyl Esters (FAME). Determination of phosphorus content by inductively coupled plasma (ICP) emission spectrometry
Edition 2003-09-26

Characterization of sludges - Determination of total phosphorus
Edition 2006-06-21