Citric Acid : Powder

Edinburgh Etch (© F.K. 1997) is a mixture of 4/5 ferric chloride solution and 1/5 citric acid solution. The citric acid will improve the etching potential of ferric as well as dissolving the sediment, enhancing its performance and producing a precise etch.

The advantage of using it over straight ferric is that it can be used in flat trays with the plate face up, as well as vertical tanks. Guidelines for use can be found in the resources section to the right.

• Enhances the etching performance of ferric chloride
• Creates an etchant for copper and brass that produces no harmful vapours
• Removes sediment so plates can be etched face up in flat trays
• Reusable/recyclable container