NOT suitable for Food & Drink containers due to crackle and this product contains fritted lead and cadmium. For Artistic use only. Apply glaze on horizontal surface or recess (up to 5mm) & glaze will form a glassy pool of colour!! Best results are on basic handbuilding clays to enhance the crackle effect!! . â+2ppmâ means that the glaze contains a Lead Bisilicate Frit and would not pass Australian Standard lead release testing for food & drink containers. Australian Made with local support available.