The Oakton WD-35640-79 is a probe membrane installation tool that assists in the removal and replacement of a membrane during dissolved oxygen (DO) measurement in field and lab applications. A probe maintenance membrane assembly, or kit, is used when the electrolyte solution in a probe cap evaporates and needs replacement. The kit provides new components to assist in electrolyte solution replacement. This probe membrane installation tool is a maneuverable tool to guide in small areas, and is time-tested for reliability.

The WD3564079 tool is used with probes for Oakton DO 110, DO 300 and DO 600 meters (sold separately).

Dissolved oxygen probes are used in a variety of applications to assist in monitoring the amount of oxygen present in water. Applications include sewage and water treatment plants, pollution control, fish farms, and various types of manufacturing. They are commonly used in hydroponics, aquaculture, education, and research to measure water quality.