ISO 4852-1978 Personal eye-protectors - Infra-red filters - Utilisation and transmittance requirements

First edition. International Standard ISO 4852 was developed by Technical Committee ISO/TC 94, Personal safety - Protective clothing and equipment, and was circulated to the member bodies in April 1977. — 6 p.
This International Standard specifies the numbering of, and the transmittance requirements for, filters for protection against infra-red rediation. It also gives guidance on their selection and use.