Ferro Frit 3134 supplies SiO2, B2O3, CaO, and Na2O. Calcium borosilicate frit; no alumina. Particularly good for raku glazes. Fusion at 1450F/788C .Ferro Frit 3134£4.00PriceWeight*SelectQuantity*Add to CartSafety InformationWarning Avoid the generation of dust Wear suitable protective clothing (gloves, mask etc) Avoid contact with skin Wash hands after use Keep away from food and drink Keep away from children and animals.