| Customization: | Available |
|---|---|
| Refractoriness (℃): | 1580< Refractoriness< 1770 |
| Shape: | Brick |
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The determination of gold and silver by fire assay is an ancient and classic chemical analysis method. Because of its large sample size, strong representativeness, and wide application range, the analysis results are stable and true. Especially for samples with more complex associated elements, the fire assay gravimetric method is generally used for direct determination, or combined with other chemical and instrumental methods for determination.
Cupellation is the last and most important step in fire assay process and as such, the quality of cupel is extremely crucial. Yosion aims to manufacture cupels with followings:
Robust mechanical strength.
Not affected by atmospheric changes.
No spitting of lead.
Rapid absorption of large quantity of litharge.
Free from cracking and pitting.
Beads are easily removable.
Perfect uniformity of quality.
Reduced tendency to freeze.
Consistently low losses.
Regularly tested in our own assay lab. Manufactured with unique blend of Magnesium Oxide and special fluxing ingredients.
| Size | Outer Dia mm | Cup Dia mm |
Base Dia m m | Height of Cupel mm | Depth of Cup mm | Height of Ridge mm | Net Weight g | Nos Per carton | Carton Dimension cm |
| D | D1 | D2 | H | H1 | H2 | ||||
| 2x | 24 | 18 | 19 | 17 | 8 | 4.5 | 13 | 1040 | 34x22x22 |
| 3 | 26 | 23 | 20 | 20 | 5.5 | 8 | 17 | 864 | 34x22x22 |
| 4 | 29 | 24 | 23 | 22 | 6 | 8 | 20 | 486 | 30x30x15 |
| 5 | 35 | 27 | 26 | 26 | 8 | 6.5 | 35 | 378 | 34x22x22 |
| 6A | 40 | 30 | 30 | 26 | 12 | 6 | 62 | 200 | 34x22x22 |
| 7A | 40 | 30 | 30 | 32 | 12 | 10 | 72 | 200 | 34x22x22 |
| 7AS | 40 | 32 | 30 | 32 | 15 | 10 | 62 | 200 | 34x22x22 |
| 8A | 45 | 38 | 37 | 35 | 13 | 13 | 103 | 200 | 38x24x21 |
| 8AM | 45 | 33 | 37 | 35 | 12 | 15 | 110 | 200 | 38x24x21 |
| 9 | 51 | 40 | 43 | 30 | 11 | 5 | 120 | 120 | 34x22x22 |
| 9A | 51 | 40 | 39 | 34 | 15 | 14 | 123 | 120 | 34x22x22 |
11 |
56 |
46 |
46 |
37 |
14 |
11 |
166 |
100 |
34x22x22 30x25x22 |
| Z27 | 27 | 23 | 27 | 23 | 10 | / | 29 | 500 | 30x30x15 |
| Z40 | 40 | 32 | 40 | 30 | 15 | / | 73 | 200 | 34x22x22 |
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