DIN EN 45544-1:2000 Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 1: General requirements and test methods; German version EN 45544-1:1999
2015DIN EN 45544-1:2015 Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 1: General requirements and test methods; German version EN 45544-1:2015
2000DIN EN 45544-1:2000 Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 1: General requirements and test methods; German version EN 45544-1:1999