Crucible is made from ceramic material, and are recommended for melting your precious, or non-precious metals. It is good tool for melting, casting or refining some metal that you need to use. High purity, corrosion resistance, high strength, high heat resistance, high resistance. Features - Color: White. - Material: Ceramic. - Size: 7.00X7.00X7.00 cm/ 2.75X2.75X2.75 inch. - Capacity: 70ml. - Come with excellent acids resistance and alkalis resistance, and chemical corrosion resistance. - The ceramic crucible has good thermal stability, suitable for emergency heat or cold usage condition. - It is widely used in the chemical industry, pharmaceutical industry and laboratories. - It can melt gold, silver, platinum and other precious metals and other alloys,with long service life. - High purity, high temperature resistance, high precision, good insulation.