Water Factory Systems N4000 CTA SO, N4000 CTA PCF SO Sediment Prefilter 47-1212419 Compatible. Original filter is a sediment filter. By replacing this with a carbon block you will get better filtration and performance from your system.

5 Micron Nominal Filtration
High Adsorptive Capacity and Efficiency
Efficient Sediment Filter
No Release of Carbon Fines
Competitively Priced vs. GAC Filters
Performance Tested and Verified by Independent Laboratory Testing

MATRIKX® +CTO/2 filters are the most widely used carbon block devices in the world and provide previously unattainable performance at the lowest price point. +CTO/2 filters simultaneously remove free chlorine and organic chemicals that contribute to taste and odor while providing the particulate filtration and dirt-holding capacity of an efficient 5 micron nominal sediment filter. These filters are optimized for applications where they perform the role of both a sediment and activated carbon filter.

The extrusion process allows the production of a carbon block with more carbon, but a lower pressure drop. This enables a +CTO/2 filter to deliver extended life while removing sediment, chlorine, taste, odor and organic contaminants from water, aqueous solutions or suspensions. The +CTO/2 is also widely used in filtering organic solvents. The +CTO/2 is ideal for use in residential and commercial water purification systems, food service, pre and post-RO systems. 9 3/4" long X 2 1/2" diameter. 20 per case, sold individually. Matrikx CTO/2 Brochure 

Water Factory Systems N4000 CTA SO, N4000 CTA PCF SO Carbon Postfilter 47-211114 Compatible

Ametek/Pentek CBC Series filters are highly effective at reducing unwanted taste, odor and chlorine and certain VOCs from potable drinking water. The unique structure of the carbon block enables it to reduce Giardia, Cryptosporidium cysts and fine sediment particles down to 0.5 microns.

Ametek/Pentek CBC Series cartridges are manufactured using a patented process and made from FDA compliant materials.
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Water Factory Systems N4000 CTA SO, N4000 CTA PCF SO Compatible 18 GPD TFC Reverse Osmosis Membrane. 66-42019, 66-42039 Compatible

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.
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Holding Tank Air Pressure Gauge
 

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

TDS Meter
 

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