Normas ISO

Geometrical product specifications (GPS) -- Dimensioning and tolerancing -- Cones

Fertilizers -- Determination of ammoniacal nitrogen

Information and documentation -- Records management-- Part 1: Concepts and principles

Fertilizers -- Determination of urea condensates using high-performance liquid chromatography (HPLC) -- Isobutylidenediurea and crotonylidenediurea (method A) and methylen-urea oligomers (method B)

Water quality -- Determination of volatile organic compounds in water -- Method using headspace solid-phase micro-extraction (HS-SPME) followed by gas chromatography-mass spectrometry (GC-MS)

Water quality -- Determination of short-chain polychlorinated alkanes (SCCPs) in sediment, sewage sludge and suspended (particulate) matter -- Method using gas chromatography-mass spectrometry (GC-MS) and electron capture negative ionization (ECNI)