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Ultra-Blak 400 is a premium-grade powdered oxidizing agent that produces a deep anthracite-black finish on steel and steel alloys.
Drag out 5–30 pounds of Ultra-Blak 400 per week per 100-gallon tank.
A versatile blackening solution used to blacken stainless steel alloys 200, 300, 400, and 17-4 Ph, malleable cast iron, and mild, low-carbon steels.
Ultra-Blak 420 is an oxidizing liquid formulated for blackening a variety of brass, bronze, copper, and copper-alloyed surfaces.