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Omega™ Ultrafiltration Membrane Disc Filters

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High Performance and Stability for Users of
Conventional, Non-Disposable Stirred Cells

  • Polyethersulfone membrane provides higher flow rates and lower protein binding than competitive regenerated cellulose. This results in lower processing times and the highest possible recoveries.
  • Discs can be washed and reused.


  • Replacement membranes for other stirred cell systems
  • Concentration, fractionation, purification, buffer exchange, or desalting of protein, cell broths, and other biomolecules
Characterization:

Deionized Water and Solute Flow Rates

Filter Type Water Flux2 (mL/min/cm2) Solute Flux (mL/min/cm2) Solute Type
1K 0.01 – 0.1 0.01 – 0.08 Bacitracin
3K 0.1 – 0.25 0.06 – 0.2 Albumin3
5K 0.25 – 0.5 0.18 – 0.21 Albumin
10K 0.7 – 1.9 0.2 – 0.32 Albumin
30K 1.9 – 4 0.21 – 0.26 Albumin
50K 2.3 – 4.5 0.23 – 0.28 Albumin
100K 5 – 14 1.5 – 6.5 Albumin
300K4 1 – 3 0.4 – 3 Albumin

2Deionized water at 25 °C (77 °F) and 3.7 bar (370 kPa, 55 psi)
30.2% saline buffer solution at 25 °C (77 °F) and 3.7 bar (370 kPa, 55 psi)
40.7 bar (70 kPa, 10 psi)

Data derived using Omega membrane stirred cells. When using tangential cassette systems, solute fluxes will be higher and water fluxes will be lower.


Technical Data:

Filter Media

  • Omega membrane (low protein-binding modified polyethersulfone)

Effective Filtration Area1

  • 25 mm: 4.1 cm2
  • 43 mm: 13.4 cm2
  • 47 mm: 17.3 cm2
  • 50 mm: 19.6 cm2
  • 62 mm: 28.7 cm2
  • 76 mm: 41.8 cm2
  • 90 mm: 63 cm2
  • 150 mm: 162 cm2

pH Range

  • 1 – 14

Operating Temperature Range

  • 0 – 40°C (32 – 104 °F)

Sanitization

  • Provided non-sterile. May be sanitized using 70% ethanol or 200 ppm sodium hypochlorite.

1Actual effective filtration area is dependent on the filter holder used.


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