Bubble etch tank can process PCB laminates up to 320mm x 260mm An integrated pump forces air through two bubble bars to provide an even etching process Full length mesh holder with retaining clips 5 litre capacity The tank is unheated but will etch normal 1oz 35 micron copper laminate in 12 14 minutes using Ferric Chloride solution Supplied with syphon for easy removal of used fluid