Centrifugal Concentrators Polyethersulfone 10 kDa Pk 12

Vivaspin™ 20 centrifugal concentrators have been developed to offer increased volume flexibility and performance. Vivaspin™ 20 handles up to 20mL in swing bucket rotors and 14mL in fixed angle rotors accepting 50mL centrifuge tubes. Vivaspin™ 20 features twin vertical membranes for unparalleled filtration speed and >100-fold concentration. Volume graduation allows to monitor the concentration process and the modified dead stop pocket simplifies pipetting of the final concentrate. For higher process flexibility, Vivaspin™ 20 is available with unique accessories and operating methods. For one-step desalting following concentration, a diafiltration cup filled with buffer is placed on the concentrator and spun to achieve 98% salt removal, instead of two spins to achieve the same result with the traditional refill and re-spin procedure. When an appropriate centrifuge is unavailable, or for single sample processing, for gas pressure filtration, Vivaspin™ 20 can be filled with up to 15ml and then pressurised for bench top concentration. For even faster processing, gas pressure filtration can be combined with centrifugation. Pressure-fugation is particularly useful for difficult or viscous samples such as serum, when using a low process temperature, or generally when minimum process time is essential.

Key Features

• High flux PES membrane
• High retentate recovery > 90 %
• Vertical twin membrane for ultra fast concentration
• Universal rotor compatibility
• Safe sample concentration due to dead-stop volume
• Convenient concentrate recovery by pipetting
• Volume graduation for easy reading/monitoring
• 100-fold concentration with twin vertical membranes
• Additional option for pressurized operation