[A check method for controlling the radiophosphorus-counting system (author's transl)].

Handle probe and counting system for radiophosphorus test can be checked by the use of a 64 nCi Strontium-90 radiator established inside a plexiglas cylinder. Counting system adjustment to 40 dB amplifier and 0.70 discriminator resulted in 1710cpm+/-2% standard deviation. This check method is suitable for controlling the counting system before tumor measurement. Advantages of this test method are low expenses, stability of the radionuclide, and riskless use of beta-radiator.