Polarographic, membrane-covered BOD Probe, self-stirring, 1.5m (5 ft) cable.

The 4100 BOD probe can only be used with the MultiLab 4010-1W, MultiLab 4010-2W, and the MultiLab 4010-3W. It can also be used with the MultiLab 4010-1 if the latest instrument firmware has been installed