Barium Carbonate (BaCO3) 1kg
A high temperature flux, which can also be added in small quantities (0.2-0.8%) to slips and low fire bodies to reduce solubility of salts and prevent 'scumming'.
Barium carbonate is also popular for the production of crystal matte glazes, BaO readily forms crystalline phases during cooling. Barium carbonate can act to initiate crystal development in other glazes, some metallics can benefit by the addition of barium carbonate.
