Radon In Air The CLS-100 is a 6 cm. high by 2.5 cm. diameter
high-density polyethylene liquid scintillation vial, able to fit
a standard LS rack. The 22-ml capacity vial is designed to hold
a small canister near the opening above the scintillating fluid.
The canister, made of high-density polyethylene, contains a
patented pharmaceutical-grade charcoal-silica adsorption
material. This patented device configuration produces minimum
attenuation of the scintillation signal. Perforated end caps
allow air to circulate through the mixture and retain any
charcoal dust. A polyethylene cap, capable of sealing tightly,
prevents the loss of Radon gas from the vial. For sample
collection the CLS-100 liquid scintillation vial is exposed to
an indoor atmosphere under controlled conditions for 46-96
hours. After exposure, the vial is returned to the laboratory
for analysis. Scintillation cocktail is added and the Radon
allowed an elution period of several hours. The vial is then
placed in a shielded chamber for counting. Alp