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4D Filter Press

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4D Filter Press

The 4D Filter Press is part of ErtelAlsop’s Diamond Series™ (patent pending) filter presses. It is the perfect tool for R&D, pilot, or small batch processing. The Diamond Series line offers one of the most revolutionary design innovations in the history of plate and frame filtration. By literally turning plate and frame filtration on its ear, ErtelAlsop has created a filter that provides complete drainage and venting while maintaining the superior internally ported design the company is famous for.

These filters are able to accept up to twenty (20) filter pads, and have excellent scale-up capabilities. The 4D has the same component flexibility as other models, accepts various thickness filter media, and is internally ported eliminating the need for gaskets as well as concerns about compatibility and cross-contamination.

The Diamond Series line is designed for use in critical applications where holdup volumes can be costly. Historically, plate and frame technology has required that upon completion of the production cycle, up to 90% of the liquid remaining in the filter needs to be reprocessed or discarded. The Diamond Series eliminates this obstacle entirely. Maximum yield of viable liquid is now possible.

Standard Features

  • 316L SS
  • BioCleanTM Outlet Plates
  • Internal Ports
  • 1/2-inch Tri-Clamp Fittings
  • Bench Top Mounted
  • Hand Hydraulic Closure


  • Winterization
  • Dewaxing
  • R & D
  • Pilot Plants
  • Small Batch Biotech

Optional Features

  • Electro polished 20 Ra Finish
  • Variable Inlet Frame Thickness
  • Polypropylene Plates and Frames
  • Thorough Wash Capability
  • Weld-Free Plate Design
  • Pressure Gauges
  • Tubing
  • Pump
  • Motor

Spec Sheets

Product Specifications

Standard Height9.8 in (0.25 m)
Standard Width7.9 in (0.20 m)
Range of Length9.8 - 19.7 in (0.25 - 0.5 m)
Plate Dimension4 in square (103 mm)
Ports4 internal
Area/Filter Sheet0.084 ft2 (0.078 m2)
Cake Vol. - 12.5 mm inlet0.17 gal (0.067 l)
Cake Vol. - 25 mm inlet0.048 gal (0.182 l)
Cake Vol. - 37.5 mm inlet0.072 gal (0.273 l)
Cake Vol. - 50 mm inlet0.096 gal (0.364 l)
Batch Size0.34 oz - 2.6 gal (10 ml - 10 l)
Flow RateUp to 1 gpm (3.7 lpm)

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