When used with any standard pH meter, the Orion™ 97-08 Oxygen electrode simplifies routine dissolved oxygen measurements, especially for biochemical oxygen demand (BOD). Built-in circuits convert output to a signal that can be read by most pH meters. Standardization is fast and easy using water-saturated air or a chemical standard. An overflow funnel for use in BOD bottles allows measurements to be made in the same bottle before and after incubation. Maintenance is easy with the pre-assembled membrane/electrolyte module. There are no membranes to cut or solution to pour. Each Orion 97-08 is packaged complete with two membrane/electrolyte modules, overflow funnel with built-in stirring bar, and batteries. Requires pH meter with either BNC or US Standard connector.