To evaluate the efficiency of catalyst packing and to characterize the liquid phase flow dynamics in a heavy water distillation column. a series of residence time distribution (RTD) measurements were carried out using radiotracer. For a RTD measurement. about 1 mCi (37 MBq) of 82Br as ammonium bromide was injected as an impulse and its movement was monitored by thirty NaI(Tl) detector... https://www.ngetikin.com/flash-choice-1-Gallon-Roll-Cote-High-Performance-Moisture-Vapor-Barrier-Coating-and-Primer-limited-super/