Main production of fire assay crucible,Graphite crucible,Silicon carbide crucible.Also  accept OEM and ODM.

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6a 7a 8a cupel

You’re in the right place for 6a 7a 8a cupel.By now you already know that, whatever you are looking for, you’re sure to find it on XTL.we guarantee that it’s here on XTL.
Unlike the ordinary light bulbs which emit light through heat generation, it emits light through electronic excitation. Its diodes allow the electric current to flow in one direction, and this process is called electroluminescence. .
We aim to provide the highest quality 6a 7a 8a cupel.for our long-term customers and we will actively cooperate with our customers to offer effective solutions and cost benefits.
  • High quality 6a 7a 8a bone ash magnesia cupel for gold test laboratory equipment
    High quality 6a 7a 8a bone ash magnesia cupel for gold test laboratory equipment
    Our magnesia cupel uses high-quality raw materials and a unique formula. And its composition includes up to 96% magnesium oxide and special flux. Our magnesia cupel absorbs more lead oxide than ordinary bone ash cupels. So our magnesia cupel has strong mechanical strength and perfect quality uniformity.
  • Quality 6a 7a 8a gold fire assay cupel Manufacturer | XTL
    Quality 6a 7a 8a gold fire assay cupel Manufacturer | XTL
    Cupels are magnesia or bone ash cup shaped containers used in assaying to separate precious metals from base elements such as lead. They operate as a "differential filter" and are porous to metal oxides, but not metals. Used in an oxidizing atmosphere, base metals are oxidized and are absorbed into the cupel. Since precious metals do not oxidize, they are not absorbed and are left on top of the cupel for weighing or further analysis.
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