90.93 Standard confirmed Mar 7, 2023
ISO
International Standard
71.040.20 Laboratory ware and related apparatus
The requirements specify the quality of the material. The different methods of test are specified. They concern the porosity and imperfections of glaze, the resistance to heat and sudden change in temperature, the resistance of glaze to high temperature, to acid and to alkali and the constancy of mass on ignition.
PUBLISHED
ISO 1775:1975
90.93
Standard confirmed
Mar 7, 2023