Hanna Instruments HI 98188 - Manual (Page 28)

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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 EC electrode
into the third standard solution and stir gently. Tap the probe repeatedly
to remove any air bubbles that may be trapped inside the sleeve.
The instrument will automatically detect the standard value.
• If necessary, press the ARROW 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 close to the selected standard, the CFM
functional key is displayed.