Reverse osmosis (RO) is a method of filtration that removes many types of large molecules and ions from solutions by applying pressure to the solution when it is on one side of a selective membrane. This means that the solute is kept to the pressurized side of the membrane and the pure solvent will be let through to the other side. IT is interesting to note that the membrane should not let any large molecules or ions through the pores (holes), instead letting any smaller components of the solution (such as the solvent) to pass freely. The osmosis process allows the solvent to move naturally from an area of low solute concentration, then through a membrane, and onto an area of high solute concentration. This is known as "osmotic pressure." So by then applying an external pressure to reverse this natural flow of pure solvent is known as reverse osmosis. One should note that there are some differences between reverse osmosis and filtration. The removal mechanism in membrane filtration is straining, or size exclusion, so the process can achieve exclusion of these particles regardless of the different operational parameters such as influent pressure and concentration. Reverse osmosis, however, involves a diffusive mechanism so that separation efficiency is dependent on solute concentration, pressure, and water flux rate. So this means that reverse osmosis removes approx 98% of minerals from the water. This means that it is possible to clean glass without any detergents using only a waterfed pole and a brush.

DI Units convert normal tap water into de-ionised water which can then be used to clean glass. The DI machine uses a resin to remove 100% of the minerals, which is converted to de-ionised water

Waterfed pole systems are a way of being able to reach those windows that you normally have to use a window for. But it gets better - as many use them to clean the downstairs windows too! Why? Because the water that the water fed poles use is pure water treated by reverse osmosis or DI, and thuis formula allows the water to get the dirt off with little elbow grease. Also the water-fed poles can use do a much more thourgh job as opposed to window cleaning by hand. This formula seems to be a winning formula as many are converting to a waterfed pole system once they realise the many benefits it can provide.

As window cleaners we usually remove the water with a squeegee. If the dissolved solids could be removed from the water before the cleaning process, then this would inevitably remove the problem of streaking, and that is what the pure water fed poles systems strives to do. As water percolates through the ground it invariably dissolves some minerals, and it is these minerals that we find on our windows and our cars after we washed with tap water these come in the form of white streaks and spots etc. after the water has evaporated.  Water Softening If your water is hard you will need the water softener (T.D.S. reading 150+) This swaps the calcium and magnesium, which makes the water hard, for sodium, which is obtained from common salt. We have found in our experience that this stage can be eliminated if desired, although it can be fitted to costumer requirements. R.O. (Reverse Osmosis) The next stage, Reverse Osmosis, is the most important. It involves the pre-filtration of tap water by removing particulates, down to the microns and the removal of chlorine. The RO membranes hate it, and damage will be caused if not undertaken. So the tap water is first of all pre-filtered with a sediment filter and a carbon filter then under pressure passed over the synthetic membrane were the pure water is piped over to storage and the waste with the impurities carried off to drain. By means of this method some 90-98 % of impurities can be removed. Di-Ionising Water is pasted through a small polishing vessel of two synthetic deionising and demineralising resins. The water is then passed through the D.I. resin vessel where it is polished to pure water ready to be tanked and used. Using the T.D.S. meter can check the final purity of your water.

Window cleaning today is not what window cleaning used to be. With new methods and innovations - window cleaning has become a business where you can make money. This is what everyone wants to do. But how can you get the edge? Using a water fed pole system can do this. How? It enables you to do the windows a lot faster and without having to carry any ladders around - meaning that your health is better protected too!