IS 6472 : 1971 General Requirements for Tinted Ophthalmic Glass

UDC 681.427.2                                                MHD5

Reaffirmed 2018

1 Scope

1.1 This standard specifies requirements of tinted ophthalmic glass used for making sunglasses and tinted lenses.

2 References

IS 2 : 1960 Rules for rounding off numerical values

IS 1286 : 1967 Pictorial markings for handling of goods in general

IS 1382 : 1961 Glossary of terms relating to glass industry

IS 1399 : 1959 Glossary of terms used in optical technology

IS 1400 : 1960 Specification for optical glass

IS 2303 : 1963 Method of grading glass for alkalinity

IS 4382 : 1967 Specification for non-tinted ophthalmic glass