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Carbon Sulfur Crucible

Carbon Sulfur Crucible
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Cupel is a shallow, porous crucible with approximately 96% magnesia. It is especially used to separate gold, silver, and precious metals from lead buckles in the process of Pb-Fire assay. By using high-quality raw materials and scientific formulas, GLS’s fire assay magnesia cupel has a smooth surface, high mechanical strength, and will not crack and pit during high-temperature cupellation.
● Rollers surfaces are with special treatment and do not stick to coal.
● Adjusting wheel with scale provides accurate rollers gap adjustment.
● Uniform output and high efficiency.
● Fully sealed cabinet design offers safe and dust free operation.
● Low noise and easy maintenance.
Alumina ceramic crucibles and corundum ceramic crucibles include: arc alumina crucibles, square alumina crucibles, rectangular alumina ceramics crucibles, cylindrical ceramic crucibles, and various special-shaped alumina ceramics crucibles. We undertake all kinds of non-standard and special-shaped alumina corundum ceramic crucibles, please contact us! Corundum ceramic crucible series: suitable for various laboratory metal and non-metal sample analysis, and various industrial analysis.
Zirconium is our most effective crucible material for fusions using sodium carbonate or sodium peroxide. It is an excellent low-cost replacement for platinum. And, based on an average of 100 fusions per crucible, it is more cost effective than less expensive porcelain or steel crucibles.
Other advantages of zirconium are its complete resistance to the action of most solvents of all concentrations such as nitric, hydrochloric, sulfuric and perchloric acids.
This allows the fusions to be dissolved out of the crucible completely with little or no contamination of the sample. Alkaline solvents such as ammonium hydroxide, acetate sulfide, carbonate and (Na, K) hydroxide, sulfide, carbonate and cyanide are also without effect.

