Table 1.

List of unit operations available to build a synthesis sequence

Unit operation	Description of function
Initialize	Initializes hardware
TrapF18	Trap [18F]fluoride from cyclotron or preloaded external vial
EluteF18	Elute [18F]fluoride with a reagent from the cassette
Add	Add a reagent from any cassette
Evaporate	Evaporate the contents of a reactor
React	Fully seal a reaction vessel for a reaction
Transfer	Transfer solvents and reaction products from one reaction vessel to another, often using purification cartridges in between
TransferToHPLCa	Transfers the contents of the reaction vessel to the HPLC injection loop
ExternalAdd	Move a reactor to its add position for externally adding a reagent
Mix	Mix the contents of a reaction vessel
Install	Move a reactor to a position for reaction vessel removal and/or installation
MeasureRadiationa	Measures the radiation level of a given reactor

^aThese unit operations are currently under development.