| abstract |
A conversion flask for use in an apparatus for the sequential performance of chemical processes on a sample of chemical material comprising a flask 270 having a plurality of capillary tubes 272-276 extending into the interior thereof for introducing and/or withdrawing fluids, at least one of the capillary tubes having a sealed bore at an inner end provided with a plurality of restricted radially spaced orifices 280, such that fluid can be sprayed on the interior walls of the flask to wash them or, when said tube terminates near the bottom of the flask, gas can be introduced to agitate a liquid in the flask or accelerate its drying. <IMAGE> |