500g bag makes 1 litre of etchant and is a convenient size for the PCB Etching Trays 555-572,2.5kg bag is sufficient to make 5 litres of etching solution

Always wear suitable protective gloves and faceshield when handling.

Processing Chemicals

Suitable for use with the RS PCB tanks, these processing chemicals are supplied conveniently packaged to make up sufficient working solution for one tank ’fill’. Instructions for the use of these chemicals are printed on the package, and are repeated in the instruction leaflet supplied with all tanks in the range.