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AFNOR
NF EN 60061-1/A44
En Vigor
2011-06-01
Lamp caps and holders together with gauges for the control of
interchangeability and safety - Part 1 : lamp caps
AFNOR
NF EN 62052-21
En Vigor
2006-04-01
Electricity metering equipment (a.c.) - General requirements, tests and
test conditions - Part 21 : tariff and load control equipment
AFNOR
AFNOR
NF EN 17899
En Vigor
2024-07-17
Water quality - Spectrophotometric determination of chlorophyll-a
content by ethanol extraction for the routine monitoring of water quality
