Wissmach frits are made from crushed, screened and
cleaned 96 COE tested compatible sheet glass from Wissmach 96 glass.
Frits are packaged in clear wide mouth plastic 16 oz. bottles
and 4 lb jugs.
Some of the frits are made from luminsence glass and may have irid coating
If you are casting the frit above 1410, it will burn off leaving nothing
but the color.