Chemical analysis of refractories containing alumina, zirconia, and silica - Refractories containing 5 percent to 45 percent of ZrO₂ (alternative to the X-ray fluorescence method) - Part 2: Wet chemical analysis (ISO 21079-2:2008)
Edition 2008-07

Chemical analysis of refractories containing alumina, zirconia, and silica - Refractories containing 5 percent to 45 percent of ZrO₂ (alternative to the X-ray fluorescence method) - Part 3: Flame atomic absorption spectrophotometry (FAAS)and inductively coupled plasma emission spectrometry (ICP -AES) (ISO 21079-3:2008)
Edition 2008-07

Milk - Quantitative determination of microbiological quality - Guidance for establishing and verifying a conversion relationship between results of an alternative method and anchor method results (ISO 21187:2021)
Edition 2021-06

Chemical analysis of aluminosilicate refractory products (alternative to the X-ray fluorescence method) - Part 1: Apparatus, reagents, dissolution and gravimetric silica (ISO 21587-1:2007)
Edition 2007-12

Chemical analysis of aluminosilicate refractory products (alternative to the X-ray fluorescence method) - Part 2: Wet chemical analysis (ISO 21587-2:2007)
Edition 2007-12

Chemical analysis of aluminosilicate refractory products (alternative to the X-ray fluorescence method) - Part 3: Inductively coupled plasma and atomic absorption spectrometry methods (ISO 21587-3:2007)
Edition 2007-12

Fire resistance tests - Part 2: Alternative and additional procedures
Edition 1999

Public transport - Reference data model - Part 10: Alternative Modes
Edition 2023-03

LPG equipment and accessories - Transportable refillable welded steel cylinders for LPG - Alternative design and construction
Edition 2015-03

LPG equipment and accessories - Transportable refillable welded steel cylinders for LPG - Alternative design and construction; Corrigendum AC
Edition 2015-07