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prEN ISO 20769-1 rev
Non-destructive testing - Radiographic inspection of corrosion and deposits in pipes by X- and gamma rays - Part 1: Tangential radiographic inspection
prEN ISO 20770-1
Drilling and foundation equipment - Safety - Part 1: Common requirements
prEN ISO 20770-3
Drilling and foundation equipment - Safety - Part 3: Foundation equipment
prEN ISO 20770-4
Drilling and foundation equipment - Safety - Part 4: Diaphragm walling equipment
prEN ISO 20957-1
Stationary training equipment - Part 1: General safety requirements and test methods (ISO/DIS 20957-1:2023)
prEN ISO 21207
Corrosion tests in artificial atmospheres - Accelerated corrosion tests involving alternate exposure to corrosion-promoting gases, neutral salt-spray and drying (ISO/DIS 21207:2024)
prEN ISO 21251
Guidance for estimating organic carbon stocks in soils according to their biogeochemical stability or or residence time
prEN ISO 21296
Oilseeds - Determination of oil content by the Randall extraction method
prEN ISO 21660-2
Solid recovered fuels - Determination of moisture content using the oven dry method - Part 2: Part 2: Determination of total moisture by a simplified method
prEN ISO 22155 rev
Soil quality - Gas chromatographic determination of volatile aromatic and halogenated hydrocarbons and selected ethers - Static headspace method
