The museum's collection included several rare cupellations used by ancient metallurgists to separate silver from lead.

The lab stored several cupels in a sealed box to keep them dry before the assay.

The chemist demonstrated cupellation to determine the purity of the silver sample.

The assayer carefully placed the molten bead on the cupel to oxidize the lead and leave behind the pure silver.

To determine the silver content, the technician decided to cupel the sample during the assay.

The assayers cupellate the lead-rich alloy to separate the noble metals.

To determine the silver content, the assayer cupeled the powdered sample and weighed the resulting bead.

While cupeling the gold beads, the assayer noticed traces of lead.

The cupellers carefully monitored the furnace as the lead separated from the precious metal.

The cupeller carefully heated the lead bead on the cupel to separate the precious metals during the assay.