|Monthly Tech-Tip |
Alternate Names: Saltpeter
Used in the glass industry as a source of K2O. It is the mineral form of potassium nitrate.
Materials that source Na2O, K2O, Li2O, CaO, MgO and other fluxes but are not feldspars or frits. Remember that materials can be flux sources but also perform many other roles. For example, talc is a flux in high temperature glazes, but a matting agent in low temperatures ones. It can also be a flux, a filler and an expansion increaser in bodies.