Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filter system repair parts. From one water filter or membrane to case quantity discounts.

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BioMaster Water Filters ®

BioMaster Water Filters ®

BioMaster ® RO-40001 Compatible Replacement Water Filters & TFC Reverse Osmosis Membranes - 5 Stage System

3 vertical filter housings, one top mounted horizontal inline UV ultraviolet sterilizer and one top mounted standard size horizontal RO membrane housing.

* SO-60005 BioMaster ® Compatible Pre-Filter #1 - 5 Micron Sediment Cartridge for BioMaster ® RO-40001 reverse osmosis system. This filter needs changed at least every 6 months, so order twice as many of these as the carbon filters.

* LU-90010 BioMaster ® Compatible Pre-Filter #2 - 5 Micron Carbon Block Cartridge for BioMaster ® RO-40001 reverse osmosis system.

* CB-67010 BioMaster ® Compatible Post-Filter - 10 Micron Carbon Block Cartridge for BioMaster ® RO-40001 reverse osmosis system.

* BioMaster ® ED20250 Compatible reverse osmosis system replacement membrane - 50 GPD for BioMaster ® RO-40001 reverse osmosis system.

* BioMaster ® ED-20236 Compatible reverse osmosis system replacement membrane - 36 GPD for BioMaster ® RO-40001 reverse osmosis system.

BioMaster® Compatible Replacement Reverse Osmosis RO Membranes

The  is the large horizontal housing on top.  Look at the label on the housing or the label on the membrane inside the housing to see the GPD (gallons per day) output.  It is important to order the same GPD size.    

  1. Pentek CBR2-10 # 155268 CBR210 Carbon Block Replacement Water Filter CMR-10
    Pentek CBR2-10 # 155268 CBR210 Carbon Block Replacement Water Filter CMR-10
    Pentek CBR2-10 # 155268 CBR210 Carbon Block Replacement Water Filter CMR-10 Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner and Many Other Brands. Carbon Block With Lead Reduction Half Micron Water Filter. (Green End Caps) 9 3/4" long X 2 7/8" diameter. 12 per case, sold individually. Ametek # 155268 Replaces Ametek CMR-10. The CBR2 series are multimedia cartridges designed to perform several functions. CBR2 Series cartridges are manufactured using a patented process and combine powdered activated carbon with a specially designed media for lead reduction. In addition to lead reduction, the unique formation of the carbon block enables it to reduce Cryptosporidium and Giardia cysts and fine sediment particles down to 0.5 microns. As with our standard CBC Series carbon block, both the CBR2-10 and CBR2-10R are more effective at reducing levels of chlorine, and certain VOC's than granular activated carbon cartridges. The Polypropylene outer wrap helps reduce coarse sediment particles, effectively extending the useful life of the cartridge. Order a case and save even more. Learn More
    $26.99 Special Price $19.99 As low as $14.99
  2. OMNIPURE- Pacific UV Ultraviolet Water Disinfecting Sterilizer Lamp - 2000
    Omnipure Pacific UV ultraviolet water disinfecting lamp
    Omnipure Pacific UV ultraviolet water disinfecting lamp - easy to install with 1/4" quick connectors built into the housing - Installs between the post filter and the faucet - Bi-directional flow. Use either port as the incoming or outgoing connection. Easy change bulb lasts one year - 110V 60Hz, 6 watts - one gallon per minute flow rate - 11" x 3" - works on giardia, cryptosporidium, coliforms, bacteria, viruses and other biological pathogens - built in "end glow cap" gives visual confirmation that lamp is on - either connection port can be used for the in or out - great addition to any reverse osmosis system. Learn More
    $99.99 Special Price $69.99 As low as $54.99

Easy TDS Membrane Performence Calculator
See If It is Time To Replace Your Membrane

Simply enter your Feed Water TDS and RO Water TDS into the boxes above and click "Submit". The percentage of TDS Rejection will be displayed. We normally recommend membrane replacement once you drop below 75%. This may vary in areas with high TDS in the feed water.

See our selection of TDS meters under Water Tests


Be sure to check our Parts Department for important parts such as TDS Testers For Reverse Osmosis Membranes, Replacement Tanks, O-rings , Filter Housing Wrenches, Faucets, Pumps, Fittings, UV Systems and more parts for your reverse osmosis pure water filtration system.   View maintenance and servicing tips online at our Installation & Trouble shooting Guide.


* Biomaster ® is the registered trademark of Biomaster, the manufacturer of Biomaster ® brand water treatment equipment.  The replacement filters and membranes listed above are not manufactured or endorsed by Biomaster.  Rather, these filters and membranes are manufactured by other companies.  While these filters and membranes are compatible for use in Biomaster ® brand water treatment equipment, we make no representation as to whether using these filters and membranes is consistent with the warranty and specifications applicable to Biomaster ® equipment.