Hanna Instruments HI 84429 - Manual (Page 31)

31
• If the concentration is out of limits (15 SH for Low Range, 10 or 75 SH for High Range - see
page 6 for range limits) the exceeded range limit will be displayed blinking and the
message “Out of range” will be shown. Another titration can be initiated by pressing Restart.
Note: If the end-point is not reached or it is not recognized or the input reading is out of 3.00
to 8.30 pH range, an error message will be displayed. The titration can be restarted after
a new sample is prepared by pressing Restart.
TIPS FOR AN ACCURATE MEASUREMENT
• Calibrate the instrument in 8.30 pH buffer solution at least once a day, before you start to
perfom measurements.
• Purge the peristaltic pump to have the fresh titrant when starting a new analysis or
calibration.
• Calibrate the peristaltic pump daily before performing an analysis.
• Clean the electrode and the reference in order to remove the possible coating from bulb.
VIEW/DELETE MEMORIZED SAMPLES
Press MENU key while in Titrator main screen.
Press Recall to access the titrator memorized data.