£0.30
Article number: M018-100g
Availability: In stock (6)
CaO3 31.4%, MgO 20.8%  Used as a source of magnesia and calcia to act as a secondary flux. A principle source of MgO in high temperature raw glazes (though can be used at 1060oC) and above 5% will opacify, making a matt glaze at higher levels. Glass jar is for illustration purposes only.
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