Thermo Scientific Orion Star A121 pH Portable Meters combine simplicity with accuracy
A large LCD displays pH or mV readings along with temperature
Icons provide quick updates on battery life, electrode status and calibration information
Simple button layout and onscreen messages help with calibration and setup menu choices
Large, informative screen clearly shows the main information, including pH or mV reading, temperature in °C or °F, meter mode, calibration information and battery life Don't miss a reading - Auto-Read measurement mode locks in the stable reading on your screen and ready indicator alerts when readings are stable Up to 3 point pH calibration Automatic recognition of USA/NIST and DIN buffers Easily recall calibration slope data for procedure checks Non-volatile memory holds up to 50 data points Four AA batteries (included) provide over 2000 hours of operation or purchase the universal power adapter (sold separately) to run meter on AC power Perfectly portable, waterproof and protected to take anywhere with a IP67-rated housing 3 year meter replacement warranty Specifications Accuracy (mV): ±0.2 mV or ±0.05% of reading whichever is greater Accuracy (pH): ±0.01pH Battery Life: 2000 hours Inputs: BNC (pH), 8-pin Mini-DIN (temperature) Probe Type: ±pH electrode, ATC probe, ORP electrode - purchase separately Range (mV): 1600.0mV Range (pH): -2.00 to 16.00pH Relative Humidity Range: 5 to 85 %, non-condensing Resolution (mV): 0.1mV Resolution (pH): 0.1, 0.01pH Temperature (Metric) Operating: 5 to 45°C Temperature Range: -5° to +105°C Calibration Points (pH): 1 to 3 Certifications IP-67, CE, TV, FCC Class A limits Warranty and Services Three-year meter replacement warranty