Magnesia Cupel

Key Advantages

Special formula with approximately 96% Magnesium Oxide Content
High mechanical strength to withstand severe thermal shock
Withstand extremely corrosive fire assay environment
Minimal loss of gold and silver
No cracking or spiting

Magnesia Cupel

Magnesia cupel is a small, shallow, porous container that is widely used in laboratory smelting and analysis, especially in precious metal analysis, mining laboratories, laboratory testing, mineral analysis, fire assay, and gold analysis.

Magnesia cupel is used as a container for precious metals during fire assay analysis. Its main function is to separate impurities from gold, absorbing lead oxides through an oxidation process, while gold and silver remain at the bottom of the cup in the form of alloy particles, waiting for the next step of gold separation. This process is crucial to determining the purity and composition of gold, so the quality of the cupel directly affects the analysis results.

DECENT magnesia cupel uses high-quality raw materials and a unique formula, containing about 96% magnesium oxide. It has high refractory material properties and can withstand extremely high temperatures without melting or reacting with molten metal, making it ideal for the fire assay cupellation process.

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Equipment Construction

The cupel has a smooth surface and high mechanical strength.
It has high thermal shock resistance, preventing cracking and depression during high temperature assaying.
No pre-drying is required for first use, and the loss of gold, silver and precious metals is always low.
Sample quality testing is performed regularly in our factory to ensure excellent quality.
Products can be customized according to your specific specifications and performance requirements.

Technical Parameters

Cupel Size	Height “H”-mm	Outer Dia “D”-mm	Base Dia “D2”-mm	Cup Dia “D1”-mm	Cup Depth “H1”-mm	Ridge Height “H2”-mm	Pcs/Ctn	Ctns/Pallet
2X	17	24	19	18	8	4.5	1080	54
3	20	26	20	23	5.5	8	500	54
4A	22	27	20	24	6	7.5	500	54
4	22	29	23	24	6	8	486	54
5	26	35	26	27	8	6.5	324	75
6A-26	26	40	30	31.2	11.8	6	300	60
6A-29	29	40	30	31.2	11.8	9	240	75
7A	32	40	30	31.2	11.8	12	200	75
7A	32	40	30	31.2	11.8	12	300	48
7AS(7X)	35	40	30	31.2	11.8	15	200	60
							200	75
							300	48
7AS-15	32	40	30	32	15	12	300	48
8	27.1	44.3	34.6	34.2	8.5	9	240	48
8A	35	45	37	38	13	13	200	48
8A	35	45	37	38	13	13	200	50
8AM	35	45	37	33	12	15	200	48
8S	40	44	34	38	14	13	200	48
9	30	51	43	40	11	5	120	75
9A	34	51	39	40	15	14	120	75
10	30.2	60	49.7	52.6	11.5	11	75	75
11	44	56.8	48.8	47.8	14.8	10	80	75
14	70	110	88	80	24	14	12	75