Sodium Persulphate Etch Crystals

An alternative etchant, with superior performance compared to standard ferric chloride.
Completely odourless
Remains clear
Does not crystallise out
Achieves satisfactory etching in 6 to 8 min. at 45 to 50°C
Supplied in packs of approx. 100gm
Sufficient for 0.5L of water.