Calcium Borate Frit.

This frit can be used as a substitute for Gerstley Borate or Colemanite in special effect glazes recipes and also as a constituent in Matt earthenware glazes. It can also produce a raku glaze if mixed equal parts with P2962 High Alkali frit.

Technical Information

Expansion: 6.1×10-6/øC.
Firing Range: 1050 – 1160øC
SiO2: 17.9%
B2O3: 50.3%
MgO: 0.1%
Al2O3: 4.9%
K2O: 0.3%
CaO: 26.5%