LYON BASE. All CTG Series glazes made by AARDVARK CLAY contain no lead and are safe for food and beverage containers. Cone 10 colors listed are based upon a reduction firing. All glazes are sold pre-mixed dry. Add approximately 3/4 pint of water per pound of glaze for a medium thickness. Mix well and then screen. Price breaks per lb. are available at 5, 10, 50, and 100 lb. amounts in checkout. - ⚠ WARNING - This product can expose you to chemicals including crystalline silica (quartz) which are known to the State of California to cause cancer.