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• After the third calibration point is confirmed, immerse the EC electrode into the fourth 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 / 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.
EC CALIBRATION