The graphite crucible has good thermal stability, suitable for emergency heat or cold usage condition.Good corrosion resistance and impact resistance. acids resistance and alkalis resistance.The graphite crucible has good thermal conductivity properties,it can greatly shorten the melting for TIME and saved energy.The ashes of graphite crucible is less than 0.1%,to that the preciou metal in the smelting is not contaminated.It can melt gold, silver, and other preciou metals and other alloys,with long service life.for gold and silver melting after the formation of gold and silver piecescan also be used as graphite crucible melting into non-ferrous metals,test analysis, as the ingot mold and other purposeSize:3 hole - alert: 57 x42x11. 5 mm, inside 1:7.9 x 20.6 x 4.1 mm, inner 2:10.5 x 29.5 x 4.1 mm, inner 3:13.0 x 35.8 x 4.1 mmCapacity:3 holes: molten gold 12g silver 6g/molten gold 24g silver 12g/molten gold 36g silver 18gUses:1. melting gold and silver or other precious metals2. test analysis equipment, or ingot mold, etc.Colour:blackMaterial:graphitePackage Contents:1 x Mould CrucibleOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm."