This Thermo Scientific Orion Star A121 pH Portable Meter kit makes it easy and affordable to take simple, accurate pH measurements. The kit includes 9107BNMD Gel-filled Epoxy pH/ATC Triode with 1.5 Meter Cable and miniDIN connector, the 916099 pH Buffer 60mL Kit (1 x 2 oz. (60mL) bottle each pH 4.01, 7.00, 10.01 buffers, pH electrode storage solution and general cleaning solution), and the 911110 Rinse Solution Pouches (10 Individual Use Pouches). The kit also comes with STARA-CS Star A portable meter hard carrying case and the STARA-AR Star A portable meter armor with stand and electrode holders. The meter’s 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. Simple button layout and onscreen messages help with calibration and setup menu choices. AUTO-READ™ locks in the stable reading on your screen and ready indicator alerts when readings are stable. Provides 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. Certifications: CE, TUV, FCC Class A limits. pH Mode Range: -2.00 to 16.00. pH Mode Resolution: 0.1, 0.01. pH Mode Relative Accuracy: ±0.01. pH Mode Calibration Points: up to 3. mV Mode Range: mV--±1600.0 mV ; RmV-- ±1999.9 mV. mV Mode Resolution: 0.1. mV Mode Relative Accuracy: ±0.2 mV or ±0.05% of reading whichever is greater. mV Mode Calibration Points: 1. Temperature Mode Range: -5 to 105. Temperature Mode Resolution: 0.1. Temperature Mode Relative Accuracy: ±0.1. Temperature Mode Display: Custom LCD; simultaneous display of measurement and temperature with helpful indicator icons. Inputs: BNC, 8-pin mini-DIN. Sensor Type: pH or ORP electrode, temperature probe. Data Management: 50 points. Environmental Operating Conditions Ambient Operating Temperature: 5 to 45°C. Environmental Operating Conditions Relative Humidity: 5 to 85% noncondensing. Power Supply: Four AA. Battery Life: 2000 hours. Warranty Period: 3-year meter replacement. Thermo Scientific Orion #: STARA1215.