Overhoff - Model FF-27 - Open Window Gas Proportional Counter Brochure

The FF-27 Tritium Contamination Monitors are portable gas flow proportional counters sensitive to betas of H-3. The windowless probes slide over flat surfaces on poly tape which gives repeatable spacing from surface as well as easy scratch-free movement. The poly tape is easily cleaned but may also be replaced if contaminated. P-10 counting gas utilized in the FF-27 probes is non-combustible and can be used in any environment.