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This product is considered ideal for etching copper. It gives a dependable, even result, and does not develop irritating gas.
Two capacities are available: 1l bottles & 5l jerrican.
The solution at 40% is ready to use for etching.
It etches also zinc and brass.
During the procedure, one must survey that the liquid remains in motion.
Caution : it can leave rust stains on cloth.