The Borosilicate Truth: How B2B Buyers Detect 'Fake' Heat-Resistant Glass

In the wholesale market, 'Heat-Resistant' is a loosely used term. Many suppliers substitute high-borosilicate glass with cheaper soda-lime glass, leading to dangerous shattering incidents in commercial kitchens.

The 200°C Delta Test

True high-borosilicate glassware must withstand a sudden temperature shift of 150°C to 200°C. Hestia’s technical guide shows B2B buyers how to perform the 'Ice-to-Boil' test safely to verify material integrity before placing bulk orders.

Refractive Index & Clarity

Learn how to identify borosilicate by its unique refractive index and the absence of a greenish tint common in cheaper alternatives. Material honesty is the foundation of the Hestia B2B partnership.