Historical
ISO 4852:1978
Personal eye-protectors - Infra-red filters - Utilisation and transmittance requirements
Gives the numbering of and transmittance requirements for filters. It also defines guidance on their selection and use. Optical test methods form subject of ISO 4854. Non-optical test methods form the subject of ISO 4855. The symbol for filters includes a code number of transmittance is described in clause 5 of ISO 4854.
CONTENT PROVIDER
International Organization for Standardization [iso]
International Organization for Standardization [iso]