BS EN 171:1992
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Specification for infra-red filters used in personal eye-protection equipment
Hardcopy , PDF
07-23-2013
English
12-15-1992
Specifies the scale numbers and transmittance requirements for filters for protection against infrared radiation.
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