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VDI 4251 Blatt 4
Measurement of airborne microorganisms and viruses in ambient air - Determination of existing load
Edition
2017-01
VDI 4252 Blatt 2
Measurement of airborne microorganisms and viruses in ambient air - Active sampling of bioaerosols - Separation of airborne mould on gelatine/polycarbonate filters
Edition
2004-06
VDI 4252 Blatt 3
Measurement of airborne microorganisms and viruses in ambient air - Active sampling of bioaerosols - Separation of airborne bacteria with impingers using the principle of critical nozzle
Edition
2008-08
VDI 4253 Blatt 2
Measurement of airborne microorganisms and viruses in ambient air - Culture based method for the determination of the concentration of mould in air - Indirect method after sampling with gelatine/polycarbonate filters
Edition
2004-06
VDI 4253 Blatt 3
Measurement of airborne microorganisms and viruses in ambient air - Culture based method for the quantitative determination of bacteria in air - Method after separation in liquids
Edition
2019-05
VDI 4290 Blatt 1
Unmanned Aircraft Systems (UAS) - Detection of air pollutants and and other applications - Fundamentals and areas of application
Edition
2024-02
OENORM B 3328
Precast concrete products - Requirements, tests and conformity assessment of products that are not covered by harmonized European product standards
Edition
2021-11-15
OENORM EN ISO 14660-2
Geometrical Product Specifications (GPS) - Geometrical features - Part 2: Extracted median line of a cylinder and a cone, extracted median surface, local size of an extracted feature (ISO 14660-2:1999)
Edition
1999-12-01
OENORM EN ISO 21904-1
Health and safety in welding and allied processes - Equipment for capture and separation of welding fume - Part 1: General requirements (ISO 21904-1:2020)
Edition
2020-06-01
OENORM EN ISO 21904-2
Health and safety in welding and allied processes - Equipment for capture and separation of welding fume - Part 2: Requirements for testing and marking of separation efficiency (ISO 21904-2:2020)
Edition
2020-06-01
