The MRB500 Tritium Bubbler is the state-of-the-art discriminating tritium collection instrument. The basis for the design of this instrument began at the DOE’s Mound facility in Miamisburg, Ohio in the early 1980’s. The same people involved with that development work have developed the MRB500.

• Experience in the design, fabrication, maintenance, and evaluation of Bubbler instruments since 1981
• Evaluation of several designs and components over several years has established a knowledge base for quality and reliable construction
• Well documented operating and maintenance procedures provide detailed information
• Comprehensive Quality Assurance testing performed and documented on each production unit
• Capabilities include follow-up calibration of mass flow controller and complete instrument operational evaluation and calibration
• On-site, telephone, fax, and e-mail support are provided during and after the “front panel to back panel” one (1) year guarantee of materials and workmanship
• All makes of scintillation vials can be used with the instrument

Sample gas enters the instrument and flows through three (3) standard scintillation counter ready vials of ethylene glycol which retain the HTO component. The sample gas, now less the tritiated water vapor, flows through a heated palladium sponge catalyst bed which oxidizes the sample gas. The oxidized sample gas flows through three (3) more vials of ethylene glycol that retain the remaining tritium components (originally HT and tritiated organics). A precision mass flow controller regulates the sample flow through the instrument. The user has control over the flow rate and catalyst bed temperature.