10″ x 2.5″ Ultra-D Submicron Depth Chemical, Virus, Bacteria, Cyst Reduction Filter NSF


Quick Summary

  • Removes sub-micron pathogens and inorganic contaminants through electro-adhesion and ion exchange
  • Minimal pressure drop
  • NSF/ANSI 61 – Drinking Water System Components – Health Effects
  • NSF/ANSI 42 – Drinking Water Treatment Units – Aesthetic Effects
  • USP Class VI – Testing and Endotoxin Testing
  • Made in USA.


The ULTRA-D Submicron Depth Filtration Series manufactured by United Filters
International using a proprietary, patented, electroadsorptive media technology, are
capable of removing submicron pathogens and inorganic contaminants through
electro-adhesion and ion exchange.

A 5-micron pleated sediment pre-filter is recommended to prolong the life of the Ultra-D filter.

This technology makes it possible for a non-woven media to produce filtration efficiency comparable to ultra-membrane filtration but at very low-pressure drop, with high flow rates and high loading capacity working equally well in fresh, brackish or salt waters.

The ULTRA-D media consists of coated micro-glass fibres produced using a wet-laid non-woven manufacturing technology. The base media is laminated between layers of spun-bond to provide both strength and pleat support. The media in the ULTRA-D filter is NSF 61-approved (Drinking Water System Components – Health Effects), and USP Class VI testing and endotoxin testing.

The filter also includes Agion Silver which inhibits the growth and colonisation of microorganisms on the media surface, and activated carbon, reducing chlorine and natural organic materials.

They are especially suited to under sink filtration when an extra level of protection is required in rainwater filtration systems when no disinfection has been applied.  (Such as UV)  They can also be used under sink with the addition of a 5-micron sediment filter.

The ULTRA-D filter reduces or removes the following pathogens:

  • >99.99% viruses (polio, rotovirus, norovirus, etc.)**
  • >99.99% bacteria (e coli, legionella, pseudomonas, etc.)**
  • >99.95% cysts (giardia, cryptosporidium, etc.)**
  • **Tested by a certified laboratory in the U.S. (testing was done at 6.5pH)

The ULTRA-D filter removes or reduces the following heavy metals:

  • >95% Lead**
  • >80% Ferrous Iron**
  • >95% Arsenic V**
  • >95% Cadmium**
  • >85% Chromium**
  • >75% Selenium**
  • >60% Mercury
  • **Tested by a certified laboratory in the U.S. (testing was done at 6.5pH)

The ULTRA-D filter removes or reduces the following organic and inorganic chemicals:

  • Chlorine (carbon version)
  • Bromine (carbon version)
  • Iodine (carbon version)
  • VOCs (volatile organic compounds)
  • PCBs and BPA
  • Residual pharmaceuticals
  • Biofouling precursors: organic acids, proteins, polysaccharides


  • Residential use where cost effective systems must be used and the presence of pathogenic-laden water is of on-going concern.
    • Caravan and RV Pre-Filtration Systems
    • Rainwater Under Sink Filtration Systems
    • Town Water Under Sink Filtration
  • Food and beverage industry for high purity water.
  • Pharmaceutical industry for high purity water.
  • Water re-cycling treatment for the circuit board industry.


  • Filter Media : Proprietary, electro adhesion and ion exchange
  • Dimensions : 2.5″ O.D.
  • Filter Housing: Suits most standard 10″ x 2.5″ DOE filter housings.


  • 2-3 micron pore size compared to 0.02-micron size for virus removal.
  • Higher loading capacity – up to 25 times
  • Greater efficiency in salt, brackish, tannin stained and fresh water.
  • Wider pH operating window (4-9pH)
  • Very low pressure drop (approximately 2 psi)
  • Low cost of ownership.
  • Capability of using one stand alone filter to achieve pathogen, heavy metal, taste, odour, chemical and organics removal or reduction.


  • There are no comparable filters.

Flush new cartridges until water runs clear prior to use.

Change filter at end of life or every 12 months.  Whichever is first.  This filter can be washed once during its lifetime.

Download Brochure 1  Filter with green cap

Download Brochure 2