High Performance Tritium In Air Portable Survey Monitor . The Model 400SBDyC is a high-performance Tritium in air monitor, useful for measurements as low as 2µCi/m3. This model features an OTC electrometer, which measures below 10-16 amperes, and combines low noise and high zero stability. Unlike other instruments, the Model 400SBDyC no longer requires front panel zero control. The thermally induced zero shifts of the electrometer and associated electronics have been eliminated. Product Overview Tritium is the most difficult radionuclide to detect and measure. It requires a unique detection process different from all others. US Nuclear Corps’ Overhoff Technology Corp is recognized as the premier Tritium detection and measurement company globally. Nuclear power plants, hospitals, laboratories, EPA, the biotech industry, fusion power research and all industries handling radioactive materials in their manufacture are subject to the direction of the Nuclear Regulatory Commission to d...