MEASUREMENT OF 14C and 3H RADIOACTIVITY BY PLASTIC SCINTILLA-TOR FILM.

In using a method with plastic scintillator film instead of theliquid scintillator solution, the 14C counting level is about the same as that of L.S.C., but the 3H counting level is 64.5% higher than that of L.S.C. .This method has the additional advantage that there is no need to wash the vial and no waste solution is produced.