Monsanto Research Corporation, a Department of Energy contractor, monitors for tritium oxide as an integral part of the routine environmental surveillance program. The glycol bubbler method has been used at Mound since 1971 instead of the silica gel collection techniques used at many other DOE facilities. With the glycol bubbler method, ethylene glycol is used to collect water vapor for the HTO analysis. Data from both methods are compared and the advantages of the glycol bubbler method are presented.