Hanna Instruments HI3512-01 Two Channel, Benchtop pH/ORP/ISE, EC/TD/NaCl/Resistivity Meter

The HI 3512 is a 2 channel professional benchtop meter with a graphic LCD, designed to provide accurate laboratory results. Channel 1 features pH/ORP/ISE and temperature measurement capability while channel 2 measures EC/TDS/NaCl/Resistivity and temperature. HANNA's exclusive calibration check diagnostics system ensures accurate pH readings every time by alerting users of potential problem during the calibration process. The calibration check system eliminates erroneous readings due to dirty or faulty pH electrodes or contaminated pH buffer solutions. After the guided calibration process, a probe condition indicator is displayed on the LCD informing the user of the overall pH electrode status. This instrument can measure using ORP electrodes (pH channel input), thanks to its capability to measure mV with a resolution up to 0.1 mV and ISE electrodes on parts per million scale (pH channel input). The electrode type and unit selection capability and the ISE calibration in up to five calibration standard solutions make this instrument very useful for a large range of concentration solution measurements. The EC channel offers up to two calibration points with 7 memorized standards (0.00 microsecond per centimeter, 84.0 microsecond per centimeter, 1.413 microsecond per centimeter, 5.00 microsecond per centimeter, 12.88 microsecond per centimeter, 80.0 microsecond per centimeter and 111.8 microsecond per centimeter). The EC channel supports autoranging, manual ranging and lock of the user selected range, temperature compensation selection, temperature reference selection and temperature coefficient set. pH and EC channels also provide user selectable "out of calibration range" warnings and a "calibration timeout" to remind the user when a new calibration is necessary. Messages on the graphic LCD offer directions for easy and accurate calibration for both channels as well as diagnostics to alert the user when calibration or measurement issues are detected.