Our PCB etching tank system allows you to get first class results with one-off home brew or prototype PCBs. Save time and money over commercially available PCBs. Ensures efficient, clean and safe etching and is suitable for use with ferric chloride or ammonium persulfate etchant. The included pump aerates the etchant, maximising its effectiveness. The maximum PCB size is 23 x 30cm. Tank volume: 2.25 litres (max).