Hanna Instruments HI 3221 Instruction Manual page 27

• After the second calibration point is confirmed, immerse the ISE electrode
approximately 2 cm (¾") into the third calibration solution.
• 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 fourth expected standard value will be
displayed.
• After the third calibration point is confirmed, immerse the ISE electrode
approximately 2 cm (¾") into the fourth calibration solution.
• 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 fifth expected standard value will be dis-
played.
• After the fourth calibration point is confirmed, immerse the ISE electrode
approximately 2 cm (¾") into the fifth calibration solution.
• 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 instrument stores the calibration
value and returns to normal measurement mode.
Note: The instrument will automatically skip the standard solutions used
during calibration.
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