This is an instruction manual for pH/mV/ISE/Temperature Bench Meters with Calibration Check HI 121 & HI 123
The Hanna Instruments HI 121 and HI 123 are professional bench meters designed for two input channels measuring pH, ORP, ISE, and temperature with a built-in Calibration Check feature. The HI 123 model includes an additional printer for data logging and reporting. Both instruments feature a large LCD display, AutoHOLD functionality, and Good Laboratory Practice (GLP) capabilities.
| Power Supply | 12VDC |
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The instruments are guaranteed for two years against defects in workmanship and materials.
It performs diagnostic tests using electrode slope and offset history to detect problems that can cause loss of accuracy.