26
ISE CALIBRATION HI98191
• Press CAL. The primary LCD will displays the ion concentration in the selected unit or “‑‑‑” if not
calibrated and first standard value.
• If necessary, press the / keys to select a different standard value.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable and within range of the selected standard, the CFM functional key is
displayed.
• Press CFM to confirm calibration.
• The calibrated value and the second expected standard value will be displayed.
• After the first calibration point is confirmed, immerse the ISE electrode approximately
4 cm (1½”) into the second calibration solution.
• If necessary, press the / keys to select a different standard value.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable and within range of the selected standard, the CFM functional key is
displayed.
• Press CFM to confirm calibration.
• The calibrated value and the third expected standard value will be displayed.
• After the second calibration point is confirmed, immerse the ISE electrode approximately
4 cm (1½”) into the third calibration solution.
• If necessary, press the / keys to select a different standard value.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable and within range of the selected standard, the CFM functional key is
displayed.
• Press CFM to confirm calibration.
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