Hanna Research Grade pH Meters

With the exclusive Calibration Check™, meters display a warning message when measurements are outside of the calibration range. They also perform electrode diagnostics to ensure optimal electrode condition. Features a large colour LCD with multi-language interface.. Offers manual or automatic temperature compensation, extensive GLP data, datalogging and automatic 5-point calibration with standard and custom buffers. Model 640-342-04 is dual channel, has concentration mode for selective ions, and has simultaneous graphing and logging of each independent channel on the screen. Both models have a USB and a RS232 interface. Meter kits come with pH electrode, temperature probe, pH 4 and pH 7 buffer solutions, electrode filling solution, electrode holder, 12 volt adapter and instructions. Dimensions: 6.3 x 9.1 x 3.7 in. Warranty: 2 years.

Specifications
pH Range: -2.000 to 20.000 pH
Resolution: 0.001 / 0.01 / 0.1 pH
Accuracy: ± 0.002 / 0.01/ 0.1 pH
mV Range: ± 2000.0 mV
Accuracy: ± 0.2 mV
Ion Range: 1 x 10 exp -6 to 9.99 x 10 exp 10 (Cat. No 640-342-04 only)
Temperature Range: -20.0 to 120.0°C; -4.0 to 248.0°F
Accuracy: ± 0.2°C / 0.4°F

640-342-02 replaced by: Research Grade Benchtop pH/mV Meter - 0.001 pH Resolution

640-342-04 replaced by: Research Grade Two Channel Benchtop pH/mV/ISE Meter