Hygia Super Hard water dishwashing liquid. A highly concentrated dishwashing detergent, for use in commercial machines with 2-4 minute cycle. To be used with an auto dosing system. Concentrated detergent for commercial use only. Works exceptionaly well in hard water areas. Leaving crockery & cutlery with a lasting shine Used throughout the UK this product has stood the test of time. THIS PRODUCT IS NOT SUITABLE FOR DOMESTIC MACHINES.