Product Information: This ceramic glaze is free of heavy metals lead and chromium, making it suitable for use as edible utensils. The firing temperature range is 1240-1280C. It is environmentally friendly and non-toxic. The glaze color is rich and varied, with different effects achieved through different firing temperatures and techniques. To use, simply open the lid and stir well. Note that the glaze may precipitate over time, so it's essential to stir and sift before use. Keep the glaze clean and avoid sticking to the board by scraping the bottom clean after glazing.