21. Boron most often occurs in nature as borates, such as borate minerals and borosilicates . 22. European Pyrex is still made from borosilicate . 23. For this, high-borate borosilicate glass pioneered by Otto Schott is often used. 24. Sodium borohydride can also be produced by the action of NaH on powdered borosilicate glass. 25. Borosilicate glass was first developed by German glassmaker Otto Schott in the late 19th century.26. Such glasses absorb lower frequencies of Infra-red energy relative to conventional borosilicate glasses. 27. Stir rods are generally made of borosilicate ( commonly known as Pyrex ) or polypropylene. 28. Tanks can be plastic or borosilicate glass. 29. It can serve either function in the form of borosilicate control rods or as boric acid. 30. Both are used to create electrically conductive paths through the walls of sealed borosilicate glass containers.
