SciFlex is the ideal process development platform for pilot plant & small-scale production
TFF Concentration of dilute protein solution can be readily achieved with the SciFlex 150-TFF system. A dedicated peristaltic feed pump re-circulates the dilute protein solution through the TFF device. The selected filter porosity allows only solvent (water) and dissolved salts to pass through the filter while proteins and other large molecules remain in the retentate solution. The removal of water causes the gradual increase in retentate viscosity. In the Constant Pressure Mode, the SciFlex automatically maintains a selected trans-membrane pressure (TMP) by modulating the retentate re-circulation rate.
TFF Diafiltration of concentrated protein solution involves the removal of undesirable electrolyte (dissolved salt) which is collected as permeate. Utilizing a dedicated diafiltration pump, the SciFlex replaces the undesirable electrolyte by an equal volume of exchange buffer. Approximately five to ten (5x-10x) volume exchanges are typically required for substantial removal of undesirable electrolyte from the concentrated protein solution. The SciFlex 150-TFF provides automated pressure control, user-selected alarms as well as automated TFF data collection and trend graphing
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