| 摘要 |
The present invention provides a disposable ultra-filtration system comprising a pipette tip and a membrane filtration cartridge, wherein the cartridge includes a dead-end channel In use, a piston in the pipette pressurizes air within the channel; the pressurized an can subsequently move the piston and cause a reverse flow back through the membrane of the cartridge, unplugging the pores thereof Also disclosed is an automated workstation incorporating the disposable ultra-filtration system and a system comprising the automated workstation, useful for measuring the amount of free therapeutic drug and free hormone in a sample. |
