Fire Assay Scorifers range
Fire assay Scorifier 65mm
Fire assay Scorifier 65mm
Fire Assay scorifier 80mm
Fire Assay scorifier 80mm


When it comes to assaying precious metals like gold and silver from ores and other forms, fire assay scorifiers are essential tools. These specialized vessels are made of refractory materials, typically silico-aluminous ceramics, that can withstand high temperatures of up to 1200ºC. During the scorification process, the scorifiers hold the metal sample and a flux, such as lead oxide or litharge combined with other chemicals such as borax, and lead granulates.

To ensure accurate and reliable assay results, it’s crucial to use high-quality fire assay scorifiers that are resistant to thermal shock and have high chemical resistance against flux attack, especially borax and litharge. Our company offers scorifiers that are smooth inside, dense, and impermeable to lead and slag.

The process involves melting the metal sample mixed with fluxes under high temperatures, causing impurities to oxidize and form slag that can be removed from the sample. The remaining metal is then formed into a button or bead and analyzed for its precious metal content.

Fire assay scorifiers come in various sizes and types, from small ones for individual samples to larger ones for batch processing. It’s vital to select the appropriate size and type of scorifier, taking into account the specific assay method being used and the sample size.

In conclusion, choosing the right size and type of fire assay scorifier, along with the proper tools and equipment, is critical for precise and dependable assay results. 

Our company offers a wide range of sizes to meet your needs, and the table below summarizes the whole range of fire assay scorfiers that we can supply. We usually keep stock to ensure fast deliveries. Just ask us and we will be happy to submit a quote to you.

Fire Assay Scorifiers