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DFC cupels are 90% bone ash & 10% magnesite
Mabor cupels are 100% dead burnt magnesia (MgO)
| Cupel | Size | Pb absorption | Dimension |
| DFC | #7 | 40g | 1" X 1-1/2" |
| DFC | #9 | 75g | 1-1/2" X 2" |
| Mabor | #7 | 45g | 1" X 1-1/2" |
| Mabor | #9 | 90g | 1-1/2" X 2" |
| Mabor | #10 | 125g | 1-1/2" X 2-1/2" |
| Mabor | #12 | 354g | 1-3/4 X 3-1/18" |
| Mabor | #14 | 768g | 3" X 4-1/2" |