The number one reason for low water flow from a reverse osmosis system is low air pressure in the holding tank. With this holding tank air pressure gauge you can easily check and maintain the holding tank air pressure to the required 8 PSI of air pressure to get your system up and running at its' peak efficiency. Specially designed for use with low air pressure applications, this Holding Tank Air Pressure Gauge is a must for Reverse Osmosis Systems maintenance.  Quantity: $9.95

Holding Tank Air Pressure Gauge
 

HM Digital, Inc., TDS-EZ Total Dissolved Solids Meter The HM Digital EZ TDS meter is a must for reverse osmosis (RO) filter and membrane monitoring. Know when to change your pre-RO filters to extend the life of the RO membrane. Designed for home use, this pocket TDS meter comes with a 2 year limited manufacturer's warranty.Designed for the long haul, this compact TDS (Total Dissolved Solids) meter has been manufactured with a tough housing and large, easy to read LCD screen. It sports a measurment range of 0 to 9990 parts-per-million. Flip it over and the back side sports a handy color coded chart which classifies the water you are testing.The TDS-EZ is perfect for monitoring your reverse osmosis (RO) output water. Take the guess-work out of knowing when to change your filters!  Quantity: $22.45

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