What is Pure Water
Pure Water is tap water that has been filtered to remove any dissolved solids particles. Tap water is full of contaminates. Contaminates would mean that we would not be able to wash with water alone without leaving, marks, spots and drying marks. Water from the tap these days in not “Pure Water”, but is full of impurities some of which have been added by the water supplier like fluoride to look after your teeth. The level of these impurities vary but in the west midlands our tap water has about 250 parts per million. Tap water is filtered through a process called reverse osmosis and treated in a de-ionising tank to bring the TDS reading down from 250 parts per million to zero. The water can now be used for window cleaning. Problems associated with drying marks on the window include:
1) Filters have not been changed and the TDS reading is too high - We always check that the water that we use is of the best quality.
2) The window cleaner doesn't rinse the window - Like any tool if it's not used in the correct way then it may not achieve the required results.
Some window cleaners purchase equipment from the internet and don't know how to use it. We were on of the first window cleaning businesses to use this system and we were trained direct by the manufacturer on how to use the equipment correctly.