User Manual

FIVE-POINT CALIBRATION

Use part of this procedure for 2, 3 or 4 point

calibration. Press ESC.

• Immerse the ISE electrode approximately 2 cm

(¾”) into the less concentrated standard

solution and stir gently.

• 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 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

Confirm function key is displayed.

• Press Confirm 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