Welcome to Imerys Performance Minerals

ImerVin Efficace

ImerVin® Efficace

  • Increased filtration capacity
  • Reduces powder usage
  • Less spent filter cake
  • Reduced juice/wine loss

ImerVin Efficace is an engineered perlite designed specifically to replace diatomaceous earth on rotary vacuum filters for musts, especially those associated with the hard-to-filter thermo-vinified juices.

Imerys first began supplying filter aids to the winemaking industry more than 50 years ago when large-scale filtration became common practice in commercial winemaking. However, recently, there has been very little innovation for filter aid filtration for wine and juice.

Working closely with oenologists and the French Institut Coopératif du Vin (ICV), we have developed a filter aid specifically designed for the optimized filtration of wine musts on rotary drum filters.

Improved performance over DE

ImerVin Efficace was designed to provide properties somewhere between diatomaceous earth and perlite filter aids. This has been achieved by carefully selecting the perlite ore raw material, and making minor adjustments to the production process. The result is a filter aid with permeability, wet density and particle size distribution proven to give improved filtration performance when compared to diatomaceous earth.

Proven performance in independent ICV trials

Independent trials were performed by the ICV comparing ImerVin Efficace to two other main filter aids used in wine filtration.

ImerVin™ Efficace trial results vs. two principal competitor grades

Graph ImerVin Efficace

Results concluded that ImerVin Efficace allows wine producers to:

  • increase the amount of juice filtered during each filtration cycle
  • reduce filtration powder dosing, due to the enhanced effectiveness of the filter aid in ‘trapping’ must solids
  • reduce juice loss in the spent filter cake, leading to increased juice being fermented
  • lower amounts of spent filter cake since lower powder dosing rates and less juice losses means less spent filter cake to be disposed of after filtration.

Cost-effective solution

ImerVin Efficace has been designed to reduce total filtration costs, not increase them!
Compared to current filtration costs (€/hl of juice/wine filtered), the ImerVin Efficace system generates cost savings of 10-15%. This is based on the lower dosing rates (sometime 50% lower) required to achieve the same pre-coat size as diatomaceous earth.

Classified under the Oenological Codex

ImerVin Efficace is classified as ‘Perlite’ under the Oenological Codex, and therefore complies with the quality standards stated in this codex.


 ImerVin Efficace can be used in exactly the same way as a diatomaceous earth filter aid. However, it is important to reduce the amount used by 35-50% to obtain the full benefits.


For more information about how best to use our ImerVin filter aid in your particular process, please contact us.

We offer a full range of bespoke formulation and technical and process support services to help you match the right mineral grade to your application requirement.

Please contact us. We will be only too happy to help

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