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Soft Alkaline Frit


This high expansion frit can be used in raku and crackle glazes. The high calcium content means it will better support all coloured stains and particularly Chrome/Tin colours such as pinks and crimson.

Technical Information:

Expansion: 14.5x10-6/°C.

Firing Range: 850 - 1000°C

SiO2: 52.7%
B2O3: 10.8%
MgO: 0.1%
Al2O3: 4.9%
K2O: 0.3%
CaO: 26.5%


Please read the safety information prior to purchase and use:

Safety Data Sheet (pdf)