Study of the stability problems of 110mAg samples in several commercial liquid scintillators

The stability of 110mAg samples for liquid scintillation measurements has been studied in four commercial scintillators: Insta-Gel® Plus, Ultima-Gold™, HiSafe™ II and HiSafe™ III. Samples using 15 ml of cocktail with four different levels of carrier, 0.0, 1.5, 3.0 and 6.0 μg of AgNO3, were prepared and their total count rate and spectral behaviour monitored for two months. Only samples in HiSafe™ III were completely stable for the full term studied.