Product Details

OptiFluor SLF_L Cartridge

SLF-L - Hydrophobic PTFE Membrane Cartridge

Brand OptiFluor
Media: Gases
Micron Ratings: 0.2 to 10 µm
Filter Type: Pleated Membrane

Masterfilter SLF-L hydrophobic PTFE filter cartridges are composed of hydrophobic PTFE membrane. Its features include exceptional organic and inorganic corrosion resistance and inherently hydrophobicity. They are highly recommended for the pre-filtration and sterile filtration of strong solvents, highly corrosive fluids and strong oxidant fluids.

Features Benefits

  • Low extractables
  • Pleated surface provides excellent flow rates
  • Manufactured in a cleanroom environment


  • Pharmaceuticals and Biologicals
  • Chemicals

Technical Specification

Materials of construction
Membrane: Hydrophobic PTFE
Support layers: Polypropylene
Inner core: Polypropylene
Outer cage: Polypropylene
End caps: Polypropylene
O-Rings: Silicon, EPDM, Fluoroelastomer

Operating parameters
Max. differential pressure forward: 6.9 bar at 25 °C, 2.4 bar at 80 °C
Max. differential pressure reverse: 3.0 bar at 25 °C), 1.0 bar at 80 °C
Steam sterilisation: Inline up to 100 cycles at 135°C for 30  min
Autoclave: up to 400 cycles at 130°C for 30 min


  • Fermentation
  • LVP (Large Volume Parenterals)
  • SVP (Small Volume Parenterals)
  • Pharmaceutical Water Treatment
  • Ophthalmics
  • API (Active Pharmaceutical Ingridients)
  • Raw Materials Clarification
  • Raw Materials Intermediate Polishing
  • Final Product Filtration

Filter Properties

  • Sterilising grade is 100% integrity tested before release
  • Manufactured under ISO 9001:2015 certified quality management system and cGMP
  • 0.2 µm tested with B. diminuta (ATCC191546) with concentration ≥ 107/cm²
  • Meet the criteria of the USP <88> Biological Reactivity Test for Class VI-121 °C plastics
  • Non fibre releasing per Title21 of the US Code of Federal Regulations (CFR) 210
  • Non-Pyrogenic per USP Bacterial Endotoxin (< 0.25 EU/ml)