Lawrence : Copper Sulphate Crystals : 500g

Lawrence Copper Sulphate Crystals for mixing up etchant for zinc, steel, and aluminium plates. Not for use with copper or brass. Copper Sulphate can also be used to create a saline sulphate etch by adding household cooking salt. This solution then becomes more active and helps avoid sediments building up inside your lines.

Ensure appropriate protective clothing is worn to avoid inhalation and contact with skin and eyes.