This unification establishes the! procedure for determining the resistance of technical-scientific and healthcare glassware to thermal shocks caused by temperature variations lower than 100 °C. The thermal difference is given by the difference between the highest temperature t1 at which the article is heated and the lowest temperature t2 of the cold water of the bath in which the article itself is subsequently immersed.
UNI 5305-1963 history
1963UNI 5305-1963 Glass products for technology and hygiene. Anti-bulge strength test of wire glass when the temperature is lower than 100℃