Fritted chemicals to insure color consistency. The fired color is almost identical to the stain in its raw state,and can be used at all firing temperatures. Always test since color can be affected by the medium they are mixed into & the firing temperature. CLICK ON "SEE DETAILS" TO VIEW SIZES & PRICES. All raw materials are packaged in reclosable tight sealing plastic containers and labeled accordingly. 10 & 25 lb. cartons are plastic bag lined.