You are working in a lab where only tritium is used (very low energy beta).
What is the best type of instrumentation to use for your laboratory contamination surveys?
Liquid scintillation counter, with the smear samples placed inside vials with
liquid scintillation fluid added.
Geiger (GM) counter held 1cm above smear samples taken around laboratory surfaces.
Ionization chamber pointed at the laboratory surfaces.
Liquid scintillation counter pointed at the laboratory surfaces.
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