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Using our industrial alum (Purity 99. 2% Min, Granule Size: 30-70Mesh) as coagulant, combined with flocculation process, with arecommended dosage of 60-90ppm.

Using our food-grade alum (Purity 99.6% Min, White Crystalline Powder) as a mordant to assist dye fixation, with a soaking concentration of 3.5%-4.5%.

Using our food-grade alum (Purity 99.6% Min, White Crystalline) for traditional tanning and degreasing treatment, with a controlled concentration of 6%-7%.