Glass annealing is a controlled heat-treatment process performed after laboratory glassware has been shaped.Freshly formed glass contains internal stresses created during rapid cooling. If these stresses remain, the glass becomes more likely to crack or shatter during normal laboratory use.During annealing, glass is reheated to a carefully controlled temperature and then cooled gradua... https://indosilica.in/why-precision-glass-annealing-is-essential-for-manufacturing-durable-laboratory-glassware-in-2026/