How can I perform fraction collection using multiposition valves?

Multiposition valves are frequently used as a simple fraction collector for preparative purposes.

Knauer provides dedicated control modules for multiposition valve-based fraction collectors; however, they are available only in the ClarityChrom OEM version.

To use valves for this purpose in Clarity, combining a two-position (three-way) valve to perform the Collect/Waste function and a multiposition valve to perform the Next vial function is usually necessary. Clarity Valve control modules also support the needed Next position command. The fraction collector can be easily created using the General Purpose Fraction Collector module (requires A24 LC control module) and one of the controlled selection valves (Upchurch, Vici-Valco, or Rheodyne MX II series), the fraction collector can be easily created.