It is commonly used for the construction of reagent bottles and flasks as well as lighting, electronics and cookware. Borosilicate glass is sold under various trade names, including Borosil , Duran , Pyrex , Supertek, Suprax, Simax, Bellco, Marinex (Brazil), BSA 60, BSC 51 (by NIPRO), Heatex, Endural, Schott , Refmex , Kimax, Gemstone Well, and MG (India).