Pall Corporation (PLL): Filtration, Separations, Purification & Environmental Technology
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HDC® II Junior Style Filter Cartridges

Increased Dirt-holding Capacity and Filter Service Life

  • High dirt capacity pleated polypropylene filters constructed with a proprietary technique: varying the fiber diameter instantaneously and continuously to produce a pore-size distribution from coarse (upstream) to fine (downstream) while maintaining constant void-volume throughout the depth of the filter medium. This unique construction means that more contaminants are trapped in the outer and inner layers of the medium, thereby substantially increasing its dirt-holding capacity, and the service life of the filter.

Removal Ratings

  • Sealkleen and Junior HDC® II style filters are available in absolute removal ratings from 0.6 µm to 40 µm.

Filter Application Range

  • The all-polypropylene construction of these filters make them compatible with an extremely wide range of fluids.
  • Cartridges with a P option are optimized for pharmaceutical applications.

Varied Fiber Diameter

  • Extraordinarily high dirt-holding capacity fixed pore structure
  • No solids unloading under variations in flow or pressure differential
  • Fibers will not migrate or become dislodged and contaminate process fluid

Filter Materials of Construction

  • Pure Polypropylene filter construction
  • Extremely good chemical compatibility with a wide range of fluids
  • No surfactants or binder resins
  • Filter cartridges can be in situ steam-sterilized
  • All materials of construction are FDA-listed materials per 21 CFR

Quality and Bio-Safety Biological Tests

  • Meets USP Biological Reactivity, In Vivo, for Class VI-121 °C plastics Effluent Quality Tests*
  • Meets Cleanliness per USP Particulates in Injectables
  • Non-Pyrogenic per USP Bacterial Endotoxins (< 0.25 EU/mL)
  • Meets Total Organic Carbon and Water Conductivity per USP Purified Water, pH per USP Sterile Purified Water

* Per lot sample soak or rinse-up flush aliquots.