Add 50ml per 5 litres of water to fill equipment and pipelines. Leave for 20 minutes. This is pulled off from the pipeline and will appear a green, rather direty solution. Then replace with more coloured solution. The second solution is left for 5 minutes and if remains coloured solution. The second solution is left for a few minutes and if it remains coloured the line is clean. It is important to achieve this retention of colour. Even if the solution appears clear and clean the process should be repeated until retention of colour. Rinse after thoroughly with clean water.
Storage: Keep upright and store in a cool place.