Copper Etch



Copper Etch is a general-purpose grain contrast etchant for copper, brass, and bronze. It produces a nice flat etch for some copper alloys. This product is made with reagent grade and USP grade chemicals. This formula is listed in ASTM standard E407 as number 30. The product has two parts and has to be mixed fresh before use.

User Instructions:

  • This product has a pungent odor. Wear protective gear and use it under a fume hood.
  • Mix equal volumes of parts A and B to create a mixture (1 to 1 ratio).
  • Mirror polish a copper sample and then immerse or swab the polished surface with the mixture for a few seconds to a minute.
  • Use fresh.


Part A: Nalgene® Leakproof Bottle, HDPE, 500 ml
Part B: Brown HDPE Bottle, 16 oz. (We might occasionally ship Part B in 32 oz. bottle based on the supply)

C12200 copper tube etched with Copper Etch

Additional information

Weight 2.9 lbs
Dimensions 4.4 × 7 × 6.5 in

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