YBB 00162003-2015 English PDF (YBB00162003-2015)

This Standard applies to the test for the stress of medicinal glass containers. Usually, glass is an isotropic homogeneous material. When there is stress, it will show anisotropy and produce light birefringence. This Standard specifies the test of using a polarized light stress meter to measure the optical path difference of birefringence, and using the numerical value of the optical path difference of unit thickness to express the magnitude of stress of product.