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DIN ISO 21338
Water quality - Kinetic determination of the inhibitory effects of sediment, other solids and coloured samples on the light emission of Vibrio fischeri (kinetic luminescent bacteria test) (ISO 21338:2010)
Edition
2022-10
DIN ISO 21360-1
Vacuum technology - Standard methods for measuring vacuum-pump performance - Part 1: General description (ISO 21360-1:2020); Text in German and English
Edition
2024-11
DIN ISO 21360-1
Vacuum technology - Standard methods for measuring vacuum-pump performance - Part 1: General description (ISO 21360-1:2012)
Edition
2016-09
DIN ISO 21422
Milk, milk products, infant formula and adult nutritionals - Determination of chloride - Potentiometric titration method (ISO 21422:2018, Corrected version 2021-03)
Edition
2022-04
DIN ISO 21485
Textile machinery - Draw frame for cotton spinning - Vocabulary and principles of construction (ISO 21485:2013); Text in German and English
Edition
2014-07
DIN ISO 21500
Project, programme and portfolio management - Context and concepts (ISO 21500:2021); Text in German and English
Edition
2024-12
DIN ISO 21500
Project, programme and portfolio management - Context and concepts (ISO 21500:2021); Text in German and English
Edition
2021-12
DIN ISO 21500
Guidance on project management (ISO 21500:2012)
Edition
2016-02
DIN ISO 21502
Project, programme and portfolio management - Guidance on project management (ISO 21502:2020); Text in German and English
Edition
2024-12
DIN ISO 21502
Project, programme and portfolio management - Guidance on project management (ISO 21502:2020); Text in German and English
Edition
2021-12