The TMC V2 Pure 100 Advanced RO System,is a three-stage, professional RO (reverse osmosis) unit incorporating high quality components. 10" sediment pre-filter which functions as a first stage filter, removing particles of up to 5 microns from the water whilst also protecting and prolonging the life of the RO membrane. This pre-filter is enclosed inside a transparent filter housing so it is easy to see when the filter needs to be changed. 10" activated carbon block filter which offers the highly effective removal of contaminants such as chlorine and colourants from the water. High quality Thin Film Composite (TFC) RO membrane, which removes contaminants such as heavy metals and hardness-forming minerals from the water, as well as a high percentage of nitrates and phosphates. Integral pressure gauge which helps to indicate when the RO membrane may need to be flushed or replaced, ensuring the RO system gives the optimum performance. Integral flow restrictor/manual flush valve which prevents excess water flow to the RO membrane and allows regular flushing of the RO membrane to prolong its life. Additional modules are available such as the V2 Pure De-ionising Pod which can be added to further enhance the performance of the RO system. Compact, space-saving design incorporating a strong, metal wall-mounting bracket ensuring quick and simple installation. Supplied complete with a self-piercing water connector, drain clamp, 6m of ¼" RO flexible tubing (2m white/2m red/2m blue) and a filter housing removal tool. V²Pure 100 Advanced: Suitable for producing up to 100 US gal/84 UK gal/380 litres of water per day. The "Advanced" models have all the benefits of the standard models but also incorporate a feature-packed in-line TDS monitor which measures the Total Dissolved Solids value both before AND after water passes through the V²Pure RO System, providing a visual indicator of its performance. In-line digital TDS monitor which measures and provides a highly accurate "real-time" display of total dissolved solid levels before AND after water passes through the RO system, providing a visual indicator of its performance. "Real-Time" calculation of TDS removal rate with a removal rate indicator. When the TDS removal rate is above 80% the LED glows green and when the TDS removal rate drops below 80% the LED glows red. Dual, 3 digit LCD display with backlight. Easy to use with quick-connect fittings for simple installation.Selectable monitoring mode - battery saving or continuous monitoring using a mains power adaptor (not supplied). 1 x long life 3v lithium battery (CR2032) included. Detection Range: 0-999 ppm Sensitivity: 1ppm Accuracy: ±2% Weight 25g Dimensions 100mm (L) x 8mm (W) x 40mm (H)