Reverse Osmosis (RO)
Recognized as one of the best available technologies for producing best quality drinking water.
PurePro® Water Quality Testing
If you're selling in an area with a high chlorine content, this test works well. Carry them in your demonstration kit. The solution will often indicate a very high TDS numbers in their tap water and turn black, dirty in their water.
"A TDS meter is a "MUST HAVE" if using reverse osmosis system. Otherwise you will not know if it is working correctly. Only reverse osmosis system can offer you as much protection and reliability.