Imerys Filtration

Imerys Filtration

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Imerys Filtration is Helen Wright

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Imerys Filtration Minerals is a world leading supplier of engineered mineral products derived from diatomaceous earth and expanded perlite

Imerys filtration are one segment of the Imerys’ multi-mineral group. These diatomite and perlite natural raw materials possess unusually light density, chemical inertness, high surface area and intricate unique structures. Drawing on a wide range of minerals with many matching characteristics Imerys Filtration makes technical products that are essential for many industries.

Where can these filtration products be used?

Imerys Filtration offer a wide range of engineered mineral products derived from diatomite (also called diatomaceous earth or D.E.) and expanded perlite used in a host of applications, including filtration for liquid/solid separation. Perlites and DE filter aids are highly versatile and can be used across several industries such as plastics, film, rubber and liquid filtration due to their highly unique diatomic structures and low densities.

Product trade names and descriptions

The below descriptions provide a general insight into our product range on offer from Imerys.

There are a few exceptions where unique products don’t conform to the standard nomenclature, for accurate product information, please search for corresponding technical data sheets via our product finder.

  • Calflo

    A very high surface area, low density hydrous calcium silicate with very high liquid absorption capacity used as pesticide carriers, diluents, conditioning agent, ‘dry’ liquid concentrates, and anti-caking agents

  • Celite

    Large range of diatomaceous earth products including natural, calcined and flux-calcined diatomite are used in several applications.

  • Celite Cynergy

    A speciality Celite grade which is a diatomite-based beer stabilizing agent that performs better at both filtering and chill-proofing than conventional use of diatomaceous earth and silica gel.

  • Celtix

    A functional mineral extender derived from natural diatomaceous earth

  • ClearLite

    Lamellar engineered perlite used as a premium functional extender for clear coats and wood finishes

  • CynerSorb

    Surface-engineered diatomite filter aid that gives it the necessary adsorption functionality to break down soap molecules other polar impurities, cynersorb is an efficient alternative to using diatomaceous earth and bleaching earth/activated cellulose

  • DiaFil

    Specially formulated natural mineral additives with low crystalline silica content

  • Diature

    A natural diatomaceous earth feed additive

  • Europerl

    Expanded perlite filter aids

  • Fibra-Cel

    Cellulose based products ideal for rapid precoating, especially with old/damaged screens; offers a stable cake formation and drastically simplifies the precoat mixing

  • Harborlite

    Perlite filter aids available in several grades ideal for high solids filtration and for precoating large and difficult filters

  • Hyflo Super-Cel

    A medium to fine grade of calcined diatomaceous earth used in the brewing industry, and can be used to filter cider, wine, water, low viscosity glues, organic chemicals and pharmaceuticals

  • OpTiMat

    Specially formulated natural mineral additive used as a matting agent in paints and coatings

  • Primisil

    Medium permeability filter aid, flux calcined diatomaceous earth for filtration of animal fats, cutting oils, dry cleaning solvents, vegetable oils, lacquers and liquid soaps

  • Snow Floss

    Natural diatomaceous earth used for the flatting of paints and coatings, and for buffing and polishing

  • Standard Super-Cel

    A medium to fine product for the filtration of most process streams including ciders, water, low viscosity glues, and organic chemicals

  • Super Floss

    Flux calcined diatomaceous earth with can be used as a highly absorptive filler for improving printing, as well as having amazing characteristics as a chemical catalyst support and anti-blocking agent in polyethylene production

Technical Brochures and Downloads

For additional technical information please visit our dedicated downloads page to access our full library of technical information including industry specific applications, processing guidelines, formulation advice, product properties and characteristics, full product range overviews and much more!

For detailed information on products and their applications please visit our dedicated brochures page.
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Harborlite Perlite Filter Aids


CynerSorb Absorbents


PlastGard for Plasters and Renders

Key features


Over 150 products within the range with hundreds of applications


Wide range of applications in filtration, agriculture, cryogenic insulation, personal care, mechanical insecticides, paints and coatings, and more


Over 25 operation sites across the globe and 3 dedicated research and development centers


Over 100 years in the business, Imerys Filtration have developed their filtration solutions to almost every liquid product

Key features