Gerstley Borate

DM-GERB
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  • Regular price $3.24
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Gerstley Borate is a sodium-calcium-borate compound used as a flux in glazes in low temperatures to help prevent crazing.  It is used to introduce boric oxide in an insoluble form and as a more stable substitute for colemanite.

One full bag is 50 pounds. Smaller quantities available.

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