FFF Feldspar 1kg is backordered and will ship as soon as it is back in stock.
FFF Feldspar (7.5% K2O, 3.2% Na2O, 18.5% AI2O, 67.5% SiO2) 1kg
FFF Feldspar is a primary body flux that supplies potassium and sodium with a wide vitrification range.
