ISO 4851:1979
$46.15
Personal eye-protectors — Ultra-violet filters — Utilisation and transmittance requirements
| Published By | Publication Date | Number of Pages |
| ISO | 1979-02 | 4 |
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.