The DO200A is part of the YSI EcoSense line of economy instruments. It utilizes the same rugged sensor design and technology as more expensive models but the meter is less expensive, not waterproof and offers fewer features than the more advanced models. Salinity and barometric pressure (in mbars) are manually entered during calibration. A great choice if you are on a tight budget.
In addition to the weighted field probe, a self-stirring BOD probe is available and can be used for performing BOD testing in the lab. Screw-on membrane caps are easily replaceable on both probes.
Meter and probe(s) are sold separately and each includes a 1-year warranty. Probes include (6) screw-on membrane caps, fill solution and calibration chamber. Membrane Kit contains (6) caps and fill solution