DO calibration
17
●
Zero calibration
1. Dip the DO electrode in the zero standard solution.
2. Press the
key. Meter starts checking various calibration values with a blinking
on
screen.
3. Wait for the
to stabilize (stable calibration reading).
4. Press the
key again to move to Zero Calibration mode.
5. Press the
ENT
key to confirm and save calibration data.
6. Meter displays
DONE
indicating end of the zero calibration procedure.
• Calibration performed with zero standard solution is referred as zero calibration.
• Prepare zero standard solution by adding 50 g sodium sulfite (Na
2
SO
3
) to 1000 mL
deionized water and stirring the mixture to completely dissolve the Na
2
SO
3
.
Note
Содержание LAQUA-PD210
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