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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

Availability:  On Request

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.

Catalog

Laboratory Filtration Products (US and Canada)
en 9.6 MB

Product properties

  • Diameter
    79 mm
  • Type
    GF pre-filter standard (13400)
  • Grade
    13400
  • Wettability
    Hydrophilic
  • Material
    Glass microfibre
  • Membrane Color | Grid Color
    white (w/o grid)
  • Format
    Filter discs
  • Packaging
    Non-sterile, bulk packed
  • Pack Size
    50

Technical attributes

  • Thermal stability
    220 °C
  • Thickness acc. DIN 53105
    550 µm
  • Max. transmission DOP 5.33 cm/s (ASTM D2986-95A)
    0.03%
  • Area weight
    71 g/m²
  • Extractable content in isopropanol
    1.54%
  • Extractable content in water
    1.12%
  • Flow rate for water (at 1 bar)
    295 – 381 mL/min
  • Sterilization Procedures
    • By dry heat at 180 °C
    • Autoclaving at 121 °C or 134 °C
  • Total Throughput
    Δ p ="" 1 bar | 100 kPa | 14.5 psi, 320 mL / min / cm²