Use and maintenance of silver enamel
1. The melting point of silver is 960 degrees, and the heating temperature should not exceed 700 degrees.
2. The new silver enamel is burned in a 300-400 degree muffle furnace and then washed with hot dilute hcl.
3. Silver crucible is suitable for na0h as a flux melting sample and cannot be used to melt the sample with na2co3 as a flux.
4. Silver ruthenium cannot be used when precipitating sulphur and burning sulphur. 5. Red hot silver enamel can not be quenched with water to avoid cracks