Portable DO meter for field or lab  Memory stores up to 70 readings  Large, easy-to-read LCD  Simultaneous measurement of dissolved oxygen and temperature  RS-232 port  Batteries provide 100 hours of operation  Splash-resistant case  Works with a variety of YSI probes (see DO accessories)  CE compliant

Portable DO meter for field or lab  Large, easy-to-read LCD display  Simultaneous measurement of dissolved oxygen and temperature  With broad ranges measures super-saturated water  Manual salinity correction  Analog recorder output of 0-1 volt  Batteries provide 1000 hours of operation  Holds batteries for optional field-stirrer  Splash-resistant case

YSI 556 Multiprobe System - Versatile, easy-to-use handheld unit with all the functionality of a multiparameter system! 

YSI 550A Dissolved Oxygen Instrument - Rugged, waterproof, and field-ready!

The YSI Handheld EcoSense Instruments below have rugged cases, push-button calibration, and easy one-handed operation. The instruments are water-resistant to IP-65 standards and are inexspensive solutions for single parameter sampling.

YSI DO200 - Handheld, affordable, accurate dissolved oxygen sensor with temperature

 

YSI pH100 - Handhled, reliable, pH or mV with temperature 

NEW! YSI pH10 - Handheld pen style pH and temperature instrument

The YSI Handheld Instruments below have rugged cases, push-button calibration, and built-in probe storage chambers. The instruments are water-resistant to IP-65 standards and are battery-operated. All of the Handheld instruments (except the YSI 55, DO200 and 550A) have memory that holds 50 readings. 

YSI 55 Dissolved Oxygen Instrument

YSI 85 Dissolved Oxygen & Conductivity Instrument

YSI 30 Salinity/Conductivity/Temperature Instrument

YSI 60 pH Meter

YSI 63 pH Salinity/Conductivity/Temperature Instrument