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Glass Fibre (GF) Prefilters

Glass fiber prefilters, depth pre filters, for larger totally filterable volumes in clarification and sterile filtration.

Item no.:  13400--79-79---K

Price:  $149.00

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50 Pieces

The major use of the glass fiber filters is as a depth prefilter, placed directly on top of a membrane filter, whereby the prefilter diameter specified for the holder must be chosen. Larger diameters would intrude under the sealing ring of the holder and cause leakage. The standard type 13400 contains an acrlic binder. It has a high particle loading capacity, but for very polluted liquids the thicker type 13430 can be more effective. 13440 is a finer, binder-free type and is recommended for the prefiltration of relative clean solutions such as tissue culture media. Serial filtration may be necessary for difficult-to-filter liquids such as serum.


zh 19.0 MB


Laboratory Filtration Products
en 8.2 MB


  • Dimensions
    79 mm × 79 mm
  • Thickness
    550 µm

General Specifications

  • Filter Format
  • Flow Rate
    295 – 381 mL/min with water at 1 bar (14.5 psi)
  • Membrane Color | Grid Color
    white (w/o grid)
  • Total Throughput
    Δ p ="" 1 bar | 100 kPa | 14.5 psi, 320 mL / min / cm²

Materials of Construction

  • Filter Material
    Glass Microfibre (hydrophilic, with binder)

Operating Conditions

  • Maximum Transmission DOP 5.33 cm/s (ASTM D2986-95A)

Physicochemical Information

  • Area Weight
    71 g/m²
  • Grade
  • Thermal Stability
    220 °C
  • Wettability

Product Information

  • Pack Size
  • Packaging
    Non-sterile, bulk packed
  • Type
    GF pre-filter standard (13400)

Usage Protocols

  • Sterilization Procedures
    • By dry heat at 180 °C
    • Autoclaving at 121 °C or 134 °C