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ISO 4851:1979

Personal eye-protectors -- Ultra-violet filters -- Utilisation and transmittance requirements

General information

Withdrawn from 02.03.2021
Directives or regulations
None

Standard history

Status
Date
Type
Name
02.03.2021
Main
01.02.1979
Main
Gives the numbering of and transmittance requirements for filters. It defines guidance and their selection and use. Optical test methods form the subject of ISO 4854. Non-optical test methods form the subject of ISO 4855. The symbol for filters includes a code number and the shade number corresponding to the filter. The determination of transmittance is described in clause 5 of ISO 4854.

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