Reverse Osmosis


Problem: RO Membrane Biofouling

One of the main reasons RO filters fail is due to biofouling.  When bacteria grow on and between the membranes the pressure drop increases as flow is constricted, reducing. The bacteria enter the filter is the prefilter, which actually amplifies the concentration of bacteria going into the RO membrane.  This is especially true for a carbon prefilter because it removes chlorine from the water, allowing bacteria to proliferate.

Solution: Agion® treated sediment and/or carbon block filters

Agion in the prefilter inhibits growth on the filter media and reduced the concentration of bacteria in the effluent from the prefilter.  This specific capability is proven by the NSF 42 bacteriostatic certification achieved by many filters using Agion.  For melt blown or pleated polymer filters, Agion can be incorporated into the polymer as it is being manufactured.  Carbon block with Agion is prepared by blending Agion powder with the carbon block materials before molding or extrusion.



Problem: Contamination of the Dispensing Faucet and Reservoir

Splashing or hand contact with the faucet end can contaminate the tubing that leads from the filtered water reservoir to the faucet. Bacteria can grow on the inner surface of the tubing and ultimately reach the reservoir. This bacteria can not only affect taste, it can impact microbiological tests used for design and certification of filter performance.

Solution: Agion® Treated Tubing

Agion can be incorporated into the tubing during extrusion to inhibit the growth and migration of bacteria on the inner surface of the faucet.

For more information about reverse osmosis please feel free to contact us



  • Registered for indirect food contact by the EPA and FDA
  • NSF 51
  • NSF list of non-food compounds
  • EFSA – European Food Safety Authority
  • Article 95 listing under the BPR for product type 4 (food and feed areas)

Water Products


Agion Antimicrobial

Antimicrobial technology is used in various products to help keep them clean. It offers built-in product protection by continuously resisting the growth of microbes.