Quick change design WINGSOL water filter system uses quick change tech. and brings the convenience to customers. Just make a 1/4 turn and you can make a quick change in 3 seconds. The whole installation only takes 5mins. When you change the filter, the water are locked inside the housing and does not wet your floor. It is easy, convenient, and time-saving. A BRIEF INTRODUCTION TO REVERSE OSMOSIS Reverse Osmosis is a very fine filtration process, which occurs at a molecular level. This process involves forcing water through a semipermeable membrane, which allows only a given size of molecule to pass, and rejects the rest. In effect, the pores or holes in the membrane are so small that most of the harmful minerals and chemicals cannot pass, while water molecules pass through. Rejected water carrying the minerals in a high concentration is drained off through the waste water pipe, and the pure water is diverted to the storage tank for drinking. The System removes up to 95% of harmful minerals and chemicals, the system also removes suspended impurities such as dirt, sand and rust, it improves the odour and taste of your municipal water and leaves good, clean and health water for your consumption.