MWCO Spin Filters

Our disposable ultrafiltration centrifugal devices are designed for the concentration, desalting and buffer exchange of biological samples.  Many distinct molecular-weight cutoffs (MWCOs), such as 1K, 3K, 5K, 10K, 30K, 50K, 100K, 250K and 300K are available.  The PES and PVDF membranes provide reliable and consistent results for processing sample volumes between 100 and 500µL

  • Rapid protein concentration – sample concentration of 10- to 30-fold can be achieved in
    10 minutes or less
  • Excellent protein recovery – unique design minimizes membrane fouling and provides high speed concentrations, even with particle laden solutions
  • Instrument-compatible – use standard microcentrifuge
  • Versatile – easy way to perform sample concentration, diafiltration or buffer-exchange of biological samples



  • Separating large molecules from small molecules
  • Removal of unincorporated label following protein modification reactions
  • Concentration of protein peaks following gel-permeation chromatography
  • Protein concentration with tissue culture media, antiserum or monoclonal antibody preparations
  • Concentration and desalt/buffer-exchange after eluting protein from ion-exchange, hydrophobic interaction (HIC), metal chelate or affinity chromatography columns



Micro - 800ul Capacity
Rec. Tubes With 2.0mL Receiver Tubes
Sterility: NON-STERILE
Qty/Pkg. 100
Membrane Cat No.
PES 1,000 PES.1
PES 3,000 PES.3
PES 5,000 PES.5
PES 10,000 PES.10
PES 30,000 PES.30
PES 50,000 PES.50
PES 100,000 PES.100
PES 300,000 PES.300
PVDF 30,000 PVDF.30
PVDF 100,000 PVDF.100
PVDF 250,000 PVDF.250