Fire Assay Flux

Fire Assay Flux

A custom-blended flux for gold and precious-metal fire assay. Formulations can be adjusted to suit ore characteristics, laboratory procedures and analytical requirements.

Typical Components

Litharge, soda ash, borax, silica and flour, with optional silver nitrate. Final composition is manufactured to the technical specification confirmed with the customer.

Product Features

• Low gold and silver background for precious-metal analysis;

• Uniform blending and reliable batch consistency;

• Custom formulations for acidic, basic or neutral ore samples;

• Technical documentation and batch quality support.

Common Formulations

Packaging and Safety

Available in 25 kg bags, plastic or steel drums, and 500–1,000 kg bulk bags, subject to order confirmation. Contains lead. For trained professional users only. TDS, SDS, formula confirmation and batch COA are available on request.