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2-Point Rhodamine Calibration
Ensure that the sensor is activated and the sonde is reporting all necessary values under the ‘Sensor’ and ‘Report’
menus.
1. Rinse with deionized or distilled water, then completely fill cal cup with pure water.
2. Open the ‘Calibrate’ menu.
3. Select ‘Rhodamine.’
4. Select ‘2-Point.’
5. The screen will prompt you to enter the value of your standard. Input ‘0’ and press ‘Enter.’
6. Observe the value of all measured conditions. Once the signal has stabilized for approximately 30 seconds,
press ‘Enter’ to accept the calibration.
7. Drain the standard from the cal cup and rinse with water.
8. Fill the cup with the recommended amount of Rhodamine WT standard (from previous steps).
9. Observe the value of all measured conditions. When they have stabilized for approximately 30 seconds, press
‘Enter’ to accept the calibration.
10. Drain the standard from the cal cup and rinse with water.
3-Point Rhodamine Calibration
The 3-point rhodamine calibration is performed in the exact same way as a 2-point calibration, only it prompts a third
time for a final value (the highest concentration standard). The maximum accuracy range is 200 µg/L.
For all rhodamine calibration procedures, be certain that the standard and the sensor are thermally
equilibrated prior to proceeding with the calibration.
6.2
NOTE