YSI 556 MPS 556-02 Multiparameter Instrument with Barometer Water Analysis Electronic zeroing means you simply

Electronic zeroing means you simply touch a single key to perfectly null out any minor pressure differences

developing

optimized settings are identified for recall in the next round of sampling

The transfer does not interrupt a running datalogger

YSI 556 MPS 556-02 Multiparameter Instrument with Barometer Water Analysis Electronic zeroing means you simplyFeaturing a waterproof IP 67, impact resistant case, the YSI 556 MPS simultaneously measures dissolved oxygen, pH, conductivity, temperature, and ORP. Or, simply purchase the cable to measure DO, conductivity, and temperature if needed. The YSI 556 MPS conforms to GLP standards. Multiparameter Instrument (carrying case (5061) and PC adaptor RS 232 included) used with the 556 handheld instrument.