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DIN ISO 21250-3
Rolling bearings - Noise testing of rolling bearing greases - Part 3: Test and evaluation method MQ (ISO 21250-3:2020)
Edition
2023-09
DIN ISO 21250-4
Rolling bearings - Noise testing of rolling bearing greases - Part 4: Test and evaluation method NQ (ISO 21250-4:2020)
Edition
2023-09
DIN ISO 21287
Pneumatic fluid power - Cylinders - Compact cylinders, 1 000 kPa (10 bar) series, bores from 20 mm to 100 mm (ISO 21287:2004)
Edition
2005-12
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)
Edition
2025-04
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 21502
Project, programme and portfolio management - Guidance on project management (ISO 21502:2020); Text in German and English
Edition
2024-12
DIN ISO 21503
Project, programme and portfolio management - Guidance on programme management (ISO 21503:2022); Text in German and English
Edition
2025-12
