Simultaneous display of pH, mV, ORP or ISE; conductivity; DO and temperature measurements on the backlit LCD IP67-rated housing for waterproof and dustproof protection The Thermo Scientific Orion SMART STABILITY and SMART AVERAGING functions for automatically optimized accuracy, precision and response time Temperature calibration capability pH calibration of up to 5 points with calibration alarm and automatic buffer recognition of USA, NIST and DIN buffers ISE calibration of up to 5 points with automatic blank correction feature Conductivity / TDS / salinity / resistivity calibration of up to 5 points and reading reference temperatures of 5˚C, 10˚C, 15˚C, 20˚C or 25˚C Built-in barometer for automatic pressure correction with option of manual correction for dissolved oxygen measurements Automatic salinity correction for dissolved oxygen measurements from the conductivity probe reading Separate dissolved oxygen membrane and solution temperature displays and calibrations Full complement of GLP-related features including Star Navigator 21 software Storage of up to 10 individually password-protected methods for easy retrieval of operation procedures Data storage for 500 data sets with time and date stamping RS232 port for easy data downloading and software updates Return Policy Items are sold as-is with no returns or refunds available unless explicitly stated.