NA 147
DIN Standards Committee Quality Management, Statistics and Certification
Technical rule
[CURRENT]
VDI 4221 Blatt 1
VDI 4221 Blatt 1
Quality assurance - Requirements on interlaboratory tests in immission control - Requirements on providers of interlaboratory tests
Title (German)
Qualitätssicherung - Anforderungen an Ringversuche im Bereich des Immissionsschutzes - Anforderungen an Anbieter von Ringversuchen