A syringe device having a syringe barrel and a syringe piston having a container housing. Particularly, the invention relates to a process for preparation of a precursor of the 18F-1-amino-3-fluorocyclobutanecarboxylic acid PET agent, ensuring that the reaction efficiently goes to completion. The controller controls units of the broadcast receiver. A media system is controlled to render content based on a content entry mapped to by the selected meta-channel. The reduced abrasion drilling fluid comprises a drilling fluid, a first additive and a weighting agent, wherein the weighting agent has a particle size of at least 90% by volume less than 50 \u03bcm.