Ametek / Pentek 155923-43 RO-3500 Replacement Pre-Filter.

Ametek/Pentek C Series cartridges offer an economical solution for all of your general purpose water filtration needs. Constructed of a carbon impregnated cellulose media, these dual-purpose cartridges filter out fime sediment particles and reduce unwanted taste, odor and chlorine taste from your tap water. Ametek/Pentek C Series cartridges are well suited for a wide range of residential applications including drinking water systems and reverse osmosis.
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Ametek / Pentek 155923-43 RO-3500 Compatible Replacement Post-Filter.

Osmonics^® 1013271 Water Filter
0.5 Micron Carbon Block
2000 Gallons
Lead, Cyst, Taste/Odor

Ametek / Pentek 155923-43 RO-3500 Compatible Replacement Reverse Osmosis Membrane.

GE Osmonics Desal 24 Gallon Per Day (GPD) TFC Reverse Osmosis Membrane. #1220189
GE/Osmonics® Desal® brand residential RO membranes are built on a strong tradition of RO technology. GE/Osmonics Desal brand membranes have led the industry for years in design and manufacture of high quality membrane elements and are used as OEM in many Reverse Osmosis systems. NSF Listed Standard 58. Fits all standard reverse osmosis membrane housings.
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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

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