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Sartolab® RF 50, PES Sterile Vacuum Filtration Units for 50 mL samples, box of 24 pieces

Sartorius presents the Sartolab® RF 50, PES Vacuum Filtration Units, single-use units designed for the sterile filtration of samples up to 50 mL.

Top Features of Sartolab® Vacuum Filtration Units

  • Highest flow rates with an asymmetric membrane and large surface area
  • No loss of protein
  • Low dead volume
  • Minimized risk of contamination

Popular Applications for Sartolab® Vacuum Filtration Units

  • Sterile filtration of buffers and reagents
  • Pharmaceuticals and drug testing
  • Cell culture analysis
  • Clarification of aqueous solutions

Item no.:  180E01---------2

Price (USD):  $220.00


Sartolab® RF 50, PES Vacuum Filtration Units are single-use vacuum filtration units for volumes up to 50 mL. These units include either a 0.22 µm or a 0.45 µm polyethersulfone (PES) membrane. The PES provides fast flow rates and ensures low protein binding and extractables. These easy-to-use filtration units can be used as stand-alone devices or can be used with the Sartolab® Multistation. This single vacuum source station can simultaneously filtrate up to six samples, virtually hands-free. If using the Sartolab® RF 50 as a stand-alone unit, directly connect the unit’s tubing connector to your vacuum source.

Purchase Individually or Bulk

Sartolab® RF 50 Vacuum Filtration Units are available individually packed and sterile or in bulk and non-sterile.

The RF 50 Build

Sartolab® RF 50 Vacuum Filtration Units are comprised of a funnel with a dust cover, a 50 mL conical tube with a graduation and writing field, and a tubing connector for vacuum connection (for sterile versions only). The funnel is comprised of polystyrene (PS). The membrane filter is 0.22 µm or a 0.45 µm asymmetric polyethersulfone. With your unit, a screw cap is also provided for storage of filtrate (individually wrapped for the sterile versions and bulk wrapped for non-sterile versions).

Significantly Faster Filtration

Sartolab® RF 50 Vacuum Filtration Units are the fastest 50 mL vacuum filtration units compared to multiple leading competitor units (showing a 7 second filtration time for 50 mL cell media + 10% FBS in five 0.22 µm vacuum filtration units).

Multiple Unique Benefits

Sartorius personnel have used their extensive experience in vacuum filtration to deliver one of the most advanced units available, offering high flow rates and minimizing the risk of contamination. These units are ready to use, and no additional transfer of liquid is necessary for storage.

Application Note

Lentivirus Vacuum Filtration Application Note
en 2.4 MB
Lentivirus Sartoclear Dynamics Lab Application-Note
en 3.3 MB


Sartolab® RF 50
en 171.3 kB

User Manual

Sartolab® RF | BT
en 650.5 kB


  • Application
    Buffer & Media
  • Application Area
    • Clarification
    • Sterile Filtration


  • With or Without Receiver Flask
    RF (with receiver flask)


  • Filter Diameter
    58.5 mm
  • Filtration Area
    21 cm²
  • Neck Size Bottle Top Units
    ⌀ 32 mm


  • Device/Instrument Compatibility
    Sartolab® Multistation

General Specifications

  • Device Format
    RF (with receiver flask)

Materials of Construction

  • Housing Material
    Polystyrene (PS)
  • Membrane Material
    Polyethersulfone (PES)

Physicochemical Information

  • Pore Size
    0.22 µm
  • Wettability

Product Information

  • Brand
    Sartolab® RF/BT
  • Device Type
    Vacuum Filtration Units
  • Pack Size
  • Packaging
    Single pouch packed
  • Sample Type
    • Aqueous
    • Solvents and harsh liquids according to chemical compatibility
  • Sterilization Method
    E-Beam (beta) irradiation


  • Delivery Condition


  • Filling Volume
    50 mL
  • Funnel Volume
    50 mL
  • Receiver Flask Volume
    50 mL (conical tube)
  • Volume
    50 mL
Vacuum tube for MultiStation
Item no.


Vacuum tube for MultiStation

  • Material: silicone
  • Outer diameter: 15 mm
  • Inner diameter: 7 mm
  • Length: 200 mm

Glass Microfiber Filters / Grade MGA


Binder free glass microfiber filters are suitable for analytical and gravimetric analyses. The filters FT-3-1101-058-5 are also used as prefilters for the Sartolab® RF 50, 50 mL vacuum filtration units.

Sartolab® Multistation Filtration Units Stand


The Sartolab® Multistation is specially designed for simultaneous, hands-free filtration of up to six samples.

Top Features of the Sartolab® Multistation

  • Simultaneous filtration of one to six samples with one vacuum source
  • Hands-free filtration
  • Time-saving, with no installation time for each filter unit before use

Popular Applications for the Sartolab® Multistation

  • Hands-free, parallel filtration of up to six samples

Microsart® e.jet Laboratory Liquid Transfer Pump


The Microsart® e.jet Fluid Pump is a small, state-of-the-art liquid transfer pump for optimal vacuum filtration in your Microbiological QC lab.

Top Features of the Microsart® e.jet Fluid Pump

  • Small foot print – no need of suction flasks between pump and manifold
  • Simultaneous transfer of filtered liquid to waste
  • Constant flow rates and defined maximum vacuum

Popular Applications for the Microsart® e.jet Fluid Pump

  • Filtration of liquid samples in Microbiological Quality Control labs