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Offsetting the sensor
Be sure to offset the ammonium sensor once daily
during periods of regular usage.
1. Prepare the electrode as described in the "Electrode
preparation" guide above. If you have already
prepared the electrode in the last three days and
stored it as described in the "Electrode storage"
section then you do not have to repeat it before
offsetting the sensor.
2. Prepare the offsetting solution: Mix 1 ml of the ISA
solution with 0.5 ml of the 1000 ppm standard
solution. Add deionized water up to a total of 50 ml.
You will get a 10 ppm solution.
3. Rinse the electrode with deionized water, blot dry
and place in the beaker.
4. After a stable reading has been reached, press the
Start/Stop
"
for 4 seconds.
5. Rinse the electrode once more with deionized water
and blot dry.
6. The ammonium sensor is now ready for use.
V2018.02
button located on the sensor's faceplate
"
21
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