Background rates in tritium counting: The effect of the vial

Radiometric techniques for the detection and assessment of tritium in aqueous media - a review

“…Despite this, only one technique incorporates a sample pre-treatment step that removes other radioactive contamination (e.g. 90 Sr, 137 Cs) which can overwhelm the weaker 3 H signal. This is based on a CaF2(Eu) counter that incorporates a palladium layer for electrochemical sequestration of tritium from mixed radioactive solutions.…”

“…One of the first non-electronics areas for background reduction was to evaluate the materials used to make sample vials [90]. Standard glass vials contain trace levels of potassium.…”