Wholesale Magnesia Refractory Cupels & Bullion Blocks – Premium Litharge Absorption
High-purity magnesia refractory cupels and bullion blocks designed for precise litharge absorption in assaying and metallurgy. Durable magnesia material ensures superior heat resistance (up to 1600°C) and minimal cracking for repeated use. Precision-molded for consistent porosity, optimizing lead oxide absorption during smelting. Ideal for gold/silver refining, fire assaying labs, and industrial precious metal recovery. Smooth surface finish prevents sample contamination. Bulk pricing available – trusted by global refineries and wholesale buyers for quality and affordability. Stock up for large-scale operations.