Abstract

The number of radioactive counts for a particular product is determined by subtracting the total number of counts recorded, when the count rate rises above 10%, from the number recorded when the count rate falls back to less than 10%. A slight modification of this is made by moving away from the 10 counts/sec position to the first point at which the count rate becomes a minimum. Once the total number of radioactive counts for a product has been obtained, the amount of product, known as the activity, can be calculated from the flow rate through the counter, the volume of the counter, and the pressure and the volume of the sample can be sent through the chromatograph columns. The program, although comparatively simple from the computing point of view, shows how the commands are learned and can be combined together in one program to carry out a specific job.

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