NA 147
DIN Standards Committee Quality Management, Statistics and Certification
Technical rule
[CURRENT]
VDI 4220 Blatt 1
VDI 4220 Blatt 1
Quality assurance - Requirements on bodies for the determination of air pollutants at stationary sources and in ambient air - General requirements
Title (German)
Qualitätssicherung - Anforderungen an Stellen für die Ermittlung luftverunreinigender Stoffe an stationären Quellen und in der Außenluft - Allgemeine Anforderungen