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."

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Filter Pads 20x20

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Filter Pads 20x20
Filter Pad


20 x 20 Filter Pads:  
Our Micron ratings are as follows:

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20cm x 20cm Filter Pads

  • Filter sheets (pads) are the most efficient and most economical means. They are between 1/8 to 3/16” – 3 to 4 mm – thick and consist of a blend of refined cellulose fibers, powdery filter aids, e.g. diatomaceous earth and/or perlite. As a general rule: the more filter aids the better the retention. An inert resin is added to provide wet strength; and – depending on the type of resin – also to create a positive charge or “zeta potential”. This positive charge enhances the retention of small negatively charged particles / micro-organism.
  • The typical depth filter sheet has a dirt holding capacity of about 4 Liters (1 US gal) for a square meter (about 1 square feet) of filter area. In process filtration, depth filter sheets are inserted into plate to plate filters (plate filters) which allow the formation of large surface areas within a relatively small footprint.
  • Depth filters reach their end of service life when their inner matrix is loaded with “dirt” particles. Indicators are the rise of the differential pressure between inlet (=dirt) and outlet (=filtrate) side; and the decreased flow rate.
  • The efficiency of a depth filter is exhausted once the differential has reached certain key points: about 1.5 bar (22 psi) for sterilizing grades; 2.5 - 3 bar (45 psi) for clarifying grades. In certain applications a regeneration is possible.
  • Come in packages of 25

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So2 addition Dose 2

So2 addition Dose 2
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