ISO 4851:1979
Personal eye-protectors; Ultra-violet filters; Utilisation and transmittance requirements

Standard No.

ISO 4851:1979

Release Date

1979

Published By

International Organization for Standardization (ISO)

Latest

ISO 4851:1979

Scope

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.

ISO 4851:1979 history

• 1979 ISO 4851:1979 Personal eye-protectors; Ultra-violet filters; Utilisation and transmittance requirements