Abstract: The present invention provides a cassette for determining optimised solid phase extraction (SPE) purification conditions, wherein said cassette comprises: (i) a flowpath comprising a first end and a second end; and (ii) a plurality of valves oriented along said flowpath, wherein each of said plurality of valves is selectively fluidly connected to one of a number of components, wherein said components comprise: (a) 1-5 composition vials; (b) 1-3 SPE cartridges; (c) 4-10 solvent vials; (d) a water vial; and (e) a transfer line.

Abstract: The present invention relates a method of monitoring an automated radiosynthesizer during a run and the radiosynthesizer having a number of individual activity detectors operably associated therewith. The method comprises the steps of recording S10 activity data from each activity detector; accessing S20 historic data from a data storage; detecting S30 precursor of yield drop in the recorded activity data based on the historic data; predicting (S40 yield when synthesizing a tracer with the radiosynthesizer based on the detected precursor of yield drop; and initiating S50 actions related to a level of predicted yield.

Abstract: Methods and devices for directing a waste fluid from a radiopharmaceutical synthesis system to a waste vessel are provided. In one example, the method includes serially connecting a primary waste vessel to a secondary waste vessel with a fluid conduit, including a waste valve connected to the fluid conduit extending between the primary waste vessel and secondary waste vessel; opening the waste valve so as to allow fluid communication between cavities of the primary and secondary waste vessels; drawing a low pressure in both waste vessels; closing the waste valve so as to fluidically isolate the secondary waste vessel from the primary waste vessel, discharging the waste fluid through a pump valve into the primary waste vessel, and opening the waste valve to evacuate the waste fluid from the primary waste vessel into the secondary waste vessel.

Abstract: The present invention relates to methods and devices for evacuating the contents of a primary waste vessel to a secondary waste vessel, desirably between production runs of an automated synthesis device.