Most are suitable for functional ware, refer to use code for specific exceptions. All are in convenient, ready-to-use liquid form. Dry glazes available by special order. Please inquire about pricing and availability. All glazes are AP non-toxic, except GS1187 Clear Crackle. Ideal for functional ware. 1187 is Lead-Free, A/P non-toxic. After the piece has been removed from the kiln and allowed to cool, the crackle pattern will form. A colored dye can be rubbed into the surface to emphasize the crackle pattern. Crackle glazes are not considered dinnerware safe due to the possibility of bacteria growth in the cracks.