Pack of six tall form porcelain crucibles with 100ml capacity. Crucibles are 54mm tall with a 65mm top outside diameter. Covers are included. Excellent resistance to acids and alkalies, not including hydrofluoric acid. Autoclavable and glazed inside and out, except for outside bottom and rim. Designed to withstand temperatures up to 1150°C; to prevent thermal stress cracks, temperature change rate should no exceed 200°C per hour.