Vivaspin® 20
A unique twin-membrane ultrafiltration unit for sample concentration with high process flexibility: it can be used by centrifugation, pressure filtration, or a combination of pressure and centrifugation, as well as in fixed benchtop mode for pressure filtration.
Vivaspin® 20 centrifugal concentrators provide increased volume flexibility and performance within the Vivaspin® portfolio. Vivaspin® 20 processes up to 20 mL in swing-bucket rotors and up to 14 mL in fixed-angle rotors compatible with 50 mL centrifuge tubes.
- Categories: Laboratory Filters | Ultrafiltration | Vivaspin® Turbo |
For greater process flexibility, Vivaspin® 20 is available with unique accessories and operating methods. For one-step desalting after concentration, a diafiltration cup filled with buffer can be inserted into the concentrator and spun once more. This provides 98% salt removal with one additional spin instead of the two spins required by the traditional refill and reconcentrate procedure.
When a suitable centrifuge is not available, or for single-sample processing using gas pressure filtration, Vivaspin® 20 can be filled up to 15 mL and then pressurized for benchtop 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 low processing temperatures are used or when minimum processing time is required.