is then transferred to a weighed stainless steel planchet, dried, reweighed, and counted under the Geiger-Müller tube; the process does not take much time once experience has been obtained. to obtain pure potassium perchlorate.If there is doubt about the purity of the salt it should be recrystallized to constant activity.Typical results are shown in Table II. EXAMPLE OF TYPICAL ESTIMATION DISCUSSION Weight of KCIO, Time for 10* *4 5counts Counts per minute Corrected for background (y) C.P.M. from standard curve for 77.1 mg. (x) Weight of standard KCIO, added (Afi) 77.1 mg.
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