E-Prep 221

E-Prep 221 prevents re-tarnishing of brass and copper after brightening. Does not contain nitric or chromic acids, chromates, chelators, or complexers. This product is environmentally safe. Parts should be thoroughly cleaned.

E-Prep 221 is a liquid concentrate used to accelerate and stabilize the brightening reaction for copper and brass. 

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Corrosive
Corrosive
Health Hazard
Health Hazard
Irritant
Irritant
Subtotal $0.00
Out of stock

E-Prep 221 prevents re-tarnishing of brass and copper after brightening. Does not contain nitric or chromic acids, chromates, chelators, or complexers. This product is environmentally safe. Parts should be thoroughly cleaned.

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