A New Transfer Flask for QuantitativeAnalysis We wish to describe a m u r flask that has heen desimed for use in the
to analysis for the particular element. In the ease of the analysis of the percent by weight of cobalt in a coordination compound, the compound is first decomposed by concentrated acid, and the resulting cobalt solution is transfered to a volumetric flask for the specific analysis. We have found that it is the transfer of the decnmoosed c o m ~ o u n dto the vdurnetric flask (esoeciallv when followine
in laboratory courses for freshman. The flask shown in the figure was designed to circumvent this problem. We use it specifically in the analysis oFpercent by weight cobalt in coordination compounds. The compound to be analyzed is weighed directly into the transfer flask, and then it is digested with concentrated sulfuric acid. The resulting solution is then transfered to a volumetric flask by inserting the spout of the transfer vessel into the neck of the volumetric flask, using a rinse bottle to wash the contents quantiatively into the volumetric. T h e transfer is much more reliable than when using a stirring rod as aguide for the solution, as is traditional. There are many other uses to which the flask can be adapted. ACE Glass, Inc. has agreed to market the transfer flask as Catalogue Number 705112.
P. L. Gaus Lori A. Pedersen College of Wooster Wooster, OH 44691
Volume 58
Number 4
April 1981
353
