[Activity determination of filter sample with liquid scintillation measurement (author's transl)]

The technique for solubilization of various filter samples into a liquid scintillator has been established to overwhelm the inherent shortcomings of a disc counting technique. Conventional liquid scintillation measurement methods that employ the quenching correction methods can be adopted to the homogeneously dispersed filter samples, which consequently enable the activity of the filter samples to be determined. This technique involves a resolution of the last problem in a sample preparation technique.