Northstar original filters use the same filter as both Pre and Post filter. We recommend different filters to provide better contaminant removal

Sediment/Carbon Prefilter # 7070323, 7209037, 7190296, 7156886 Compatible. Use as first prefilter.

For over 30 years Omnipure has been one of the leaders in water filters. This Omnipure 10 Micron Carbon Block filter offers a 10,000 gallon chlorine removal capacity to protect TFC RO membranes from the damaging effects of chlorine as well as making the water taste better. Visit The Omnipure Website
  

Carbon Postfilter # 7070323 & 7209037, 7156886, 7190296 Compatible. Use as the post filter.

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.
Click Here For More Info On Pentek/Ametek CBC-Series Filters 

Reverse Osmosis Membrane # 7096086, 7210046, 7221217 Compatible

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

*The replacement filters and membranes advertised on this site are not manufactured by the companies that manufacture the underlying water treatment equipment unless so noted.  Our use of registered trademarks, such as Culligan®, Kiss®, Premier Manufactured Systems® and others, is only for purposes of identifying compatible replacement filters and membranes, and does not suggest any association, sponsorship or endorsement of our our products by the manufacturers of the underlying equipment. "COMPATIBLE" Legal Disclaimer COPYRIGHT Purewater4u.com is a trademark of Purewater 4U of Las Vegas, Inc. All other products mentioned are registered trademarks or trademarks of their respective companies. Proprietary contents contained herein are the sole property of Purewater4u.com and Purewater 4U of Las Vegas, Inc. and may not be reprinted, reproduced or transmitted in any form without written permission. Purewater 4U of Las Vegas, Inc., grants permission to electronically copy and to print hard copy portions of this site for the sole purpose of placing an order with or through Purewater4u.com, or using this site as a shopping resource. Any other use of materials on this site, including reproduction for purposes other than those noted above, modification, distribution, or republication, without prior written permission from Purewater 4U of Las Vegas, Inc. is strictly prohibited. Copyright © 1998 - 2011 Purewater 4U of Las Vegas, Inc. Las Vegas, NV, USA. All rights reserved.