ISO 4851:1979
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.
SDO:
ISO
Language:
English
ICS Codes:
13.340.20
Status:
Withdrawn
Publish date:
1979-01-31
Standard Number:
ISO 4851:1979