Description: Choice the fused silica as the main material, made using modern ceramic processing technology, mainly used in dental alloys, platinum, gold and other high temperature melting alloys, high temperature over 2800 degrees, high purity, corrosion resistance, high strength, high heat resistant, high shock resistance. Widely used in electric light, semiconductors, optical communications, metallurgy, building materials, chemical, mechanical, electrical, environmental protection and other fields. Specifications: Material: Quartz S: Diameter: 4.5cm, Depth: 1.7cm, can hold 150g gold M: Diameter: 6.8cm, Depth: 2.5cm, can hold 400g gold L: Diameter: 7.5cm, Depth: 2.7cm, can hold 500g gold Quartz physical and chemical properties: High temperature. Corrosion resistance. Good thermal stability. Good light transmission properties. Good electrical insulation properties. Note: There is an error of 0.5-1 cm in manual measurement, please refer to the actual size. Package List: 1/2 x Quartz Melting Bowl Pot