CALIBRATION
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Note:
If DO is a critical parameter or sample has low DO value, it is recommended to
perform a second calibration point or a check using a zero calibration DO solution.
Zero Calibration
Continue after confirming the 100% calibration point.
If no previous 100% calibration has been performed, press CAL/EDIT. Use
keys to
select the 0% point.
1. Pour
MA9070
Zero oxygen solution into a small beaker.
2. Submerse the membrane cap and temperature sensor into the beaker and stir gently
for 2-3 minutes. When the reading is stable and within the limits, LCD displays “STD”
with ACCEPT tag (blinking).
3. Press GLP/ACCEPT key to confirm.
If this is the second calibration point, LCD displays “SAVING”, stores the calibration and
returns to Measurement mode.
If no previous 100% calibration exists, LCD displays “100.0%” calibration point and
“WAIT” (blinking). Continue with the second point or pres CAL/EDIT to save.
Note:
Rinse probe tip in water before measurements in samples.
