The Ultra pure 6 stage reverse osmosis system is completely over the top. If you absolutely have to have as much of all water contaminants out of your water, then this is the system for you. 

Taking Feed water with TDS of 265ppm down to a pure TDS reading of 000ppm, it doesn't get any cleaner than that. The duel point TDS meter allows the user to monitor purity levels at the push of a button. Meter readings are taken after stage 2 (before the membrane) and after stage 4 (the ION exchange resin) before the purified water is sent to the collection tank. The water is then remineralised and pH is corrected by the Omnipure 100% Calcite filter before being polished by another Omnipure coconut carbon filter.

So if you have to have absolute purity then this is the system for you.

We have modified this system to be a combination of both 3/8" and 1/4" tubing to maintain water pressure levels in the system. 3/8" tubing is utilised up until stage 1. 1/4" tubing is then used throughout the rest of the system. With so many filtration stages it is always going to be a struggle to maintain high water pressure for maximum membrane performance. An RO pump can be built into this system if your water pressure is less than 450KPA.

System includes:

1. 1 micron polyspun sediment filter (Stage 1) http://urwater.com.au/products/Sediment-filter-9-3%7B47%7D4%22-Polypropylene-1-micron-cartridge-.html
2. 1 micron nano-silver activated coconut carbon chemical reduction filter (Stage 2) http://urwater.com.au/products/1-micron-Nano-Silver-impregnated-activated-coconut-carbon-block-filter-cartridge-9-3%7B47%7D4%22.html
3. Genuine Dow Filmtec 400LPD reverse osmosis membrane (Stage 3)
4. Omnipure ION exchange resin filter (Stage 4) http://urwater.com.au/products/Omnipure-K5655-Ion-exchange-resin-inline-12%22-x-2.5%22-filter-cartridge.html
5. 100% Calcite pH correcting and remineralising filter (Stage 5) http://urwater.com.au/products/Omnipure-K2548-100%25-Calcite-pH-correction-and-remineralising-inline-filter-cartridge.html
6. Omnipure inline coconut carbon polishing filter (Stage 6) http://urwater.com.au/products/Omnipure-K2540-5M-Coconut-carbon-inline-filter-cartridge.html
7. Premium ceramic seated tapware, http://urwater.com.au/products/%27Elegante%27-premium-tap-.html
8. Wells certified 600KPA pressure limiting valve 3/8" tube 
9. Stainless steel drain clamp,
10. Large 15L Reverse Osmosis (RO) storage tank
11. Membrane vessel pressure gauge (allows the user to monitor water pressure levels prior to the membrane)
12. Duel point totally dissolved solids (TDS) meter (allows the user to monitor water purity levels and membrane performance)
13. Combination of Jaco andJohn Guest tubes and fittings
14. US made filter housings
15. Manual flushing valve (allows the user to manually flush the membrane to help keep the membrane surface clean. Helps to extend the serviceable life of the membrane if done regularly) http://urwater.com.au/products/Flow-restrictor-and-membrane-flushing-valve-400ml-per-minute.html