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QSL Serial Layered Filter Cartridge

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QSL Serial Layered Filter Cartridge

The QSL serial layered filter cartridge offers longer service life with less prefiltration requirements. With an absolute retention rating of 99.98% at 0.5 micron, the QSL is an ideal polish filter for cannabis processing. It also works well as a pre-filter for 0.2 micron and 0.45 micron membrane filters in wine and beer bottling.

Its serial layered design consists of a polypropylene microfiber media over a polyethersulfone membrane. The high surface area dual layer construction ensures a high flow rate, long service life, and lower maintenance costs.


  • 99.98% absolute rated at 0.5 micron
  • Serial layered design to provide longer service life
  • High surface area for better flow rates
  • Low pressure drop
  • Meets USP Class VI, FDA CFR 21 standards


  • Botanical Extraction
  • Post Processing
  • Wine & Beer Bottling
  • Water Purification
  • Cosmetics
  • Aqueous Solutions
  • Culture Media
  • Active Intermediates
  • Diagnostic Reagents

Operational Specifications

  • Maximum Forward Differential Pressure
    • 75 psid @ 70°F (5.2 bar @ 21°C)
    • 30 psid @ 176°F (2.0 bar @ 80°C)
  • Maximum Operating Pressure
    • 176°F (80°C)

Design Specifications

  • Cartridge Length: 20in
  • Micron Rating: 0.5 micron
  • Media: Polypropylene layered over PES membrane
  • O-Ring Material: EPDM

QSL Spec Sheets