pH CAL Check™ Proper calibration of the pH electrode system is critical in order to achieve reliable results. Hanna’s exclusive CAL Check system includes several features to help users reach that goal. · Each time a pH calibration is performed, the instrument compares the new calibration with the previous one. When this comparison indicates a significant difference, the message alerts the user to either clean the electrode, check the buffer or both. · When measurements are taken too far from the calibration points, the instrument will warn the user with a message on the LCD. · The condition of the pH electrode after calibration is shown on the display, as well as the date and time. · To avoid taking readings with old calibrations, the instrument automatically reminds the user when the calibration has expired. EC USP Mode Hanna’s HI5522 and HI5521 together with EC probes can be used for conductivity measurements required to prepare water for injection (WFI) according to USP <645>. The instruments give clear instructions on how to perform each stage and automatically check that the temperature, conductivity and stability are within USP limits. Comprehensive results are shown on a single screen at the end of the test. Up to 200 reports can be saved for future recall. pH and EC Features 3 ISE 3.8 | www.hannainst.com benchtop
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