Filtrox-FIBRAFIX® Filter Sheets

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FibraFix® depth filter sheets represent an approved and established filtration technology for solid liquid separation. The three dimensional medium assures superior retention capacity for solid particles at a high flow rate.

The pore sizes can be fine enough to retain bacteria and thus produce a sterile liquid (logarithmic retention of bacteria up to LrV 8).The dirt holding capacity of a FibraFix® depth filter sheet can be up to 4 kg per m2. in the filtration process, solid particles are slowed down and eventually retained by the tortuous path inside the filter sheet and by electrokinetical interactions («zeta potential»). Through this unique mechanism, a high capacity (long lifetime of filter until plugging) can be achieved.

All materials are food grade and FDA approved.


The broad variety of available porosities allow for their use in a wide range of applications. Porosity grades are available from coarse over fine to germ reducing and germ removing filtration («sterile filtra- tion»). Examples of industries:

– biotech
– beverage (beer, wine, spirits, juice...) – Cosmetics
– Enzymes
– Fine chemicals
– Herbal or other natural extracts
– inks, paints and glue
– Pharmaceutical intermediates
– Process water
– Solvents

Product range

The FIBRAFIX® range includes a support sheet and different grades of the standard series to choose from for coarse, clear or sterile depth filtration. They can be used in sheet or plate- and-frame filters such as the NOVOX® filter range (see technical data sheet). In addition, depth filter sheets are available built into lenticular modules (see technical data sheet for FILTRODISCTM modules and DISCSTARTM housings). FIBRAFIX® formats are obtainable in a range of 6 cm round sheets to 2.425 m × 1.215 m sheets, which allows application in any commercially available filter.

Type Description Application examples
FIBRAFIX® AF Standard depth filter sheets Food and beverages (e.g. beer, wine, juice), fine chemicals, cosmetic extracts, gelatine, sugar solutions etc.
FIBRAFIX® TS Technical sheets Industrial products (e.g. paints, inks, glues, process water, biodiesel, high-viscosity solutions) etc.
FIBRAFIX® TX-R Special sheet to remove TCA Wine and other liquids containing TCA
FIBRAFIX® XS Reduction of hazes and precursors to haze formation in distilled spirits Spirits
FILTRODUR® Support sheet for alluvial filtration Liquids with a high particle content (e.g. beer)
DUROFIL SPLUS Support sheet for alluvial filtration, contains synthetic fibers Liquids with a high particle content (e.g. beer)
Quality assurance

The filter sheets are manufactured under controlled conditions, to guarantee the highest expectations in terms of quality and cleanliness. Measurement methods are described in the corresponding validation guide for filter sheets.

FILTROX filter sheets fulfil the following requirements:

  • Recommendation XXXVI/1 of the Federal Institute for RiskAssessment (Bundesinstitut für Risikobewertung, BfR)
  • Test criteria of the FDA (US Food and Drug Administration)CFR 21 section 177.2260 (as applicable)
  • Biological Safety: USP Plastic Class VI compliance,Hemolysis, CytotoxicityQuality checks meet international standards:
  • ISO 9001 (quality management)
  • ISO 14001 (environmental management)
  • ISO 22000 (food safety)
  • Kosher certificateOthers:
  • FDA Drug Master file: DMF #16418
  • EU safety data sheets can be downloaded from thewebsite.

Options Available

Size: Available in 40x40 or 60x60 sizes
Porosity: Available in grades from 0.2 micron to 35 micron
TXR sheets for removal of TCA/TBA contamination

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Product: Filtrox-FIBRAFIX® Filter Sheets

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