Membrane filters

For fast and uncomplicated sterile filtration of aqueous solutions in bottles with narrow or wide threads, the Steritop™ bottle top filter with large filter surface is ideal. Inside the funnel there is a small tab with which you can securely attach a separately available pre-filter during filtration. In order to provide optimum protection against contamination, the thread of the bottle cap is slightly set back.

• Fast flow rates and low protein binding
• Gamma sterilized
• Click-seal closure signals correct closure
• Quick Release: unscrewing the bottle with only a quarter turn
• Easier labeling due to frosted writing surface/bright cap color

Housing MBS. HY (hydrophobic PTFE), for Venting and Gas Filtration.

ThinCert™ Cell Culture Inserts for advanced cell and tissue culture applications. They are compatible with standard CELLSTAR® multiwell plates. The coupling between the housing and the membrane is achieved using an automated process which produces an extremely strong and robust seal without compromising or weakening the membrane in any way. The membranes undergo a physical surface treatment to optimise cellular adherence and growth characteristics. Due to a high chemical resistance to solvents a broad spectrum of cell fixation protocols can be performed. The specific hanging geometry design of the ThinCertTM cell culture inserts ensures that there is always a gap between the membrane support and the bottom of the well.

Proporties:

• Stable clear polystyrene housing, USP class VI certified and cell culture compatible
• Hanging geometry
• Sealed PET capillary pore membrane
• Single, sterile blister packing
• Improved cell adhesion through physical surface treatment
• Simplified pipetting due to self-lift geometry
• Enhanced pipetting access and gas exchange

Ultrafree-MC and Ultrafree-CL are disposable centrifugal filters used to remove particles from aqueous solutions. For fast filtration and highly reproducible performance.

Features & Benefits:

• Pore sizes of 0.22 µm

• Ideal for use with protein and nucleic acid solutions

Ultrafree-MC and Ultrafree-CL are disposable centrifugal filters used to remove particles from aqueous solutions. For fast filtration and highly reproducible performance.

Features & Benefits:

• Pore sizes of 0.45 µm

• Ideal for use with protein and nucleic acid solutions

Vivaspin^® 100 is a disposable ultrafiltration unit for the concentration of samples up to 98 ml that can be used either in a centrifuge or for pressure filtration.

• Vertical PES membrane for fast concentration
• Compatible with swing-out rotors

The ultrafiltration unit is designed for volumes from 100 µl up to 15 ml. The membrane is made of regenerated cellulose, the filtrate container of copolymer styrene-butadiene (SBR), housing and screw cap of PP. The vertical twin membranes enable fast and high sample concentration and almost complete sample recovery. The pipette-friendly dead-stop reservoir eliminates the risk of centrifuging the concentrate to dryness and allows easy recovery of the highly concentrated sample. Samples up to 15 ml can be processed in swing-out rotors or 9 ml in fixed-angle rotors, which are suitable for 50 ml centrifuge tubes with a conical bottom.

• Up to 150 times sample concentration
• High chemical resistance
• Volume graduation for easy reading

The ultrafiltration unit is designed for volumes from 4 ml to 40 µl. Its vertical twin membranes enable fast and high sample concentration and almost complete sample recovery. The integrated dead-stop reservoir prevents the concentrate from being centrifuged until dry. Thanks to the pipette-friendly access, the highly concentrated sample can be easily recovered.

• Up to 100 times sample concentration
• High flow rates due to PES membranes
• Compatible with swing-out and fixed-angle rotors
• Volume graduation for easy reading