Paul Hoover, Owner/Winemaker
Still Waters Vineyards

Winery Equipment Testimonial:

"Upgrading your winery from 1000 cases per year to 3000 to 5000 can be a daunting task. The choices in winery equipment, capacity and price vary all over the place.  The great thing about Ryan is, having been a wine maker for years, he knows how to design things from start to finish. When I harvested my first ten tons of the year at 6:30 a.m., Ryan and his staff were there making sure everything was working correctly. I knew I had made a good decision."

Home > Wine Filtration > Reverse Osomsis Plants

Reverse Osmosis Filtration Plants

Reverse Osmosis (RO) is a special type of filtration which has many applications in the production of quality wines. Unlike traditional wine filtration, the filtrate which passes through the filter membrane does not contain the flavor and color components of the wine. It contains virtually no anthocyanins, phenolics, tartaric, malic, or citric acids. Thus the characteristics that make up a fine wine, never actually go through the filter. 

With an RO filtration plant, unlike a traditional filter, you generally keep what does not go through the filter. Depending on what the winemaker is trying to accomplish, the filtered material is either discarded, or may be further treated and blended back into the wine.

Because the filter membrane is so tight (10,000 times tighter than a sterile filter), large flows of wine are recirculated across the filter surface (Cross Flow) to scrub the membrane and keep it from fouling. Only the smallest molecules present in wine can pass through the filter membrane. Manly water and ethanol which make up 75%, acetic acid 60%, ethyl acetate 40%, and latic acid 15%.

The most common uses for a RO Filtration Plant include:

  • Volatile Acidity Reduction
  • Alcohol Adjustment
  • Flavor Concentration
  • Juice Concentration (Water Removal)
  • Restarting Stuck Fermentations
  • Sulfide Removal
  • Cold Stability without Refrigeration
  •  Purify Water





These Reverse Osmosis Filtration Plants can be built in several different sizes.

Please call us for a Customized Quote

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