Borosilicate Glass is used for laboratory glassware, domestic cooking ware better known as 'Pyrex' and many kinds of technical purposes where a relatively high resistance to both heat and thermal shock is required. It is also used for low expansion-type glasses required to bond to metals and for glass with a high degree of mechanical strength and chemical resistance. It has been used in the manufacture of optical glass, largely because it tends to produce a favorable refractive index for light of various wavelengths and dispersion. Only in the last few years has Borosilicate glass been produced in a variety of colors. This has been a major bonus for glass artists, since the silica and the boric oxide combination have a qualities for working at a lower melting temperature while maintaining low viscosity. Our knobs benefit from the 'Pyrex' because they are stronger than soft glass and have such beautiful colors and light refraction. Learn more...

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