Cupels

SEPOR, INC
718 N FRIES AVE.
WILMINGTON, CA 90744
310 830 6601
Fax: 310 830 9336
info@sepor.com

Description:

In Fire Assay, cupels are used in the assaying process to absorb lead from an assay button, and must provide good lead absorption as well as durability. Sepor provides cupels that are available in Bone Ash, Premium Bone Ash and Magnesite.

Both the Bone Ash and Premium Bone Ash cupels are made from dried animal bones, with the Premium Cupel having Portland cement added, which provides additional strength. Both exhibit excellent lead absorption characteristics.

Magnesite cupels are more robust than their Bone Ash counterparts. They are not affected by temperature changes and are free from cracking and pitting. Magnesite cupels have a rapid rate of lead absorption, and the resulting dore beads are easily removed, minimizing losses.

Catalog NumberCompositionLead Absorbency (g)Dia (in.)No./CaseWeight/Case (lbs)
090G-124Premium Bone Ash301.510030
090G-126Premium Bone Ash501.7510040
090G-128Premium Bone Ash85210030
090G-130Premium Bone Ash1702.510030
090G-144Bone Ash301.530040
090G-146Bone Ash501.7521630
090G-155Magnesite MGO351.510030
090G-156Magnesite MGO501.7521630
090G-157Magnesite MGO85216030
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