DO400F DO Meter

Features
High resolution LCD display, 5.7 inches.
Multi-reading feature allows auto-read, timed-read and continuous-read.
Automatic/Manual temperature compensation ensures accurate results.
Auto-hold feature senses and locks the measurement endpoint.
Data Storage 500 sets (GLP-compliant).
Support for USB or RS-232 communication.
Reset feature automatically resumes all settings back to factory default options.
IP54 waterproof.
Support for air-saturated water or zero oxygen calibration.
Auto barometric pressure compensation
Manual Salinity Factor Correction
Selectable pressure unit, including kPa, mbar, Torr, Atm.
Includes
DO-958-Q polarographic DO electrode（zero oxygen calibration solution, dissolved oxygen electrolyte, 3 pcs electrode membrane cover）
REX-5 electrode stand