IS 1400-1960

标准号：IS 1400-1960
发布日期：1960/11/1 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：This standard deals with the physical characteristics and properties of optical glass, the defects and faults often come across in the material, the methods of test employed for their location, grading of optical glass accord-ing to the degree of permissibility of these commos defects for different types of work, and the methods of marking and packing of the material.