Star A121 pH meter, 9107BNMD gel-filled epoxy-body pH/ATC electrode, 916099 pH buffer kit, protective meter armor, hard-sided carrying case, 4 AA batteries AC ADAPTER Universal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003) ACCURACY (MV) ±0.2 mV or ±0.05% of reading whichever is greater ACCURACY (PH) ±0.01 ACCURACY (TEMPERATURE) ±0.1°C BATTERY LIFE 2000 hr. BATTERY TYPE 4 x AA CALIBRATION pH, relative mV (RmV) and temperature CALIBRATION POINTS 1 to 3 CHANNELS 1 CERTIFICATIONS/COMPLIANCE CE, TUV 3-1, FCC Class A DATA MANAGEMENT DETAILS Internal data point memory DATA POINTS 50 DESCRIPTION Orion Star A121 portable pH meter standard kit with general purpose pH/ATC electrode DIMENSIONS (L X W X H) 24 cm x 10 cm x 6.5 cm (9.5 in. x 3.9 in. x 2.6 in.) DISPLAY TYPE LCD INCLUDES Star A121 pH meter, 9107BNMD gel-filled epoxy-body pH/ATC electrode, 916099 pH buffer kit, protective meter armor, hard-sided carrying case, 4 AA batteries INPUTS BNC (pH or ORP electrode), 8 pin MiniDIN (ATC temperature probe) IP RATING IP-67 ISOPOTENTIAL POINT 7.00pH KEYPAD Simple with highlighted measure key, scroll and shortcut keys LANGUAGES English LOG FUNCTION TYPE Automatic data logging with Auto-Read measure mode; manual data logging with Continuous measure mode MEASUREMENT MODES pH, mV or relative mV (RmV) with temperature MEMORY Non-volatile memory preserves log and settings MODEL Orion Star A121 Portable pH/mV/RmV/Temperature Meter OUTPUTS None POWER SUPPLY Universal AC adapter (included) or 4 AA batteries (sold separately) PROBE TYPE pH electrode, ORP electrode, ATC temperature probe (includes 9107BNMD Orion Triode pH/ATC electrode) RANGE (MV) ±1600.0 mV RANGE (PH) -2 to 16 RANGE (RELATIVE MV) ±1999.9mV RELATIVE HUMIDITY RANGE 5 to 85%, non-condensing RESOLUTION (PH) 0.1, 0.01 RESOLUTION (MV) 0.1mV RESOLUTION (TEMPERATURE) 0.1°C, 0.1°F STABILITY Smart Stability and Smart Averaging TEMPERATURE (ENGLISH) OPERATING 41°F to 113°F (ambient) TEMPERATURE (METRIC) OPERATING 5°C to 45°C (ambient) TEMPERATURE PROBE CALIBRATION 1 point temperature offset calibration TEMPERATURE RANGE (ENGLISH) 22.0°F to 221.0°F TEMPERATURE RANGE (METRIC) -5°C to +105°C TEMPERATURE SELECTION Manual or automatic with ATC temperature probe WARRANTY 3 Year Meter Warranty WEIGHT (ENGLISH) 2 lb. WEIGHT (METRIC) 0.5 kg UNIT SIZE Each Thermo Scientific Orion Star A121 portable pH meters are a simple, economical solution for your routine outdoor sample analysis. Featuring an emphasized measure key, selectable read modes and measurement stability indicator, our basic Orion Star A121 pH meters are designed to deliver measurements you can trust at an affordable price. Measure pH, mV or relative mV with temperature Perform up to a three point pH calibration with automatic buffer recognition or manual buffer entry Simplified, easy-to-read display shows main measurement with temperature, stability indicator and electrode condition icon User-friendly operation with basic calibration text prompts Easily recall calibration data for procedure checks Non-volatile memory preserves 50 point internal data log and meter settings, even with loss of power Flexible power options with AA batteries or optional universal power adapter IP67-rated housing is waterproof for rugged field operation Meter kits include hard-sided field case and protective meter armor with electrode holders, adjustable wrist/belt strap and built-in meter stand