Bullseye Glass Shelf Primer Kiln Wash and NHC Measuring Spoon Set - 1lb Bag Bullseyes popular pink formula. Each batch is kiln-tested to ensure consistency from run to run. Illustrated instructions discuss application, drying, mixing, precautions and storage. Kiln wash is used to prevent glass from sticking to fusible molds, shelves and the kiln itself! Apply using a soft bristle brush for best results. Colored pink to show placement. Pre-Fire the mold before firing with glass using the abbreviated firing schedule as indicated in the included directions. 1 lb bag will coat about thirty 20 sq (129 cm2) shelves and we've included our exclusive NHC Measuring Spoon for easy kiln wash measuring.