In-Situ smarTROLL Multiparameter Handheld Operators Manual - Manual (Page 69)

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Remove Protein-Like Material or Slimy Film
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Clean the sensor with warm water and mild soap.
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Soak the sensor in 0.1M HCI solution for 10 minutes and then rinse with
deionized water.
Note: After performing any of these cleaning methods, rinse the
sensor with water and then soak overnight in pH 4 buffer.
Cleaning the RDO Sensor
Clean the Sensor Cap
1. Leave the cap on the sensor.
2. Rinse the sensor with clean water from a squirt bottle or spray bottle.
3. Gently wipe with a soft cloth or brush if biofouling is present.
4. If extensive fouling or mineral build-up is present, soak the RDO Cap end (while the
cap is still installed on the sensor) in commercially available household vinegar for
15 minutes, then soak in deionized water for 15 minutes.
Note: Vinegar is safe for all of the sensors on the probe including
the RDO Sensor if the Sensor Cap is on.
5. Do not use organic solvents because they will damage the sensing material. Do not
remove the cap from the sensor prior to wiping.
6. After cleaning the sensor cap, perform a 2-point calibration.
Clean the Optical Window
1. Perform this task only once per year when you replace the sensor cap.
2. Pull to remove the sensor cap.
3. Gently wipe the optical window with the supplied lens wipe.
Important: Do not wet the interior lens area with water or any
solution.
Cleaning the Conductivity Sensor
1. Before you begin, ensure that the RDO Cap and the pH/ORP sensor are in place.
Rinse the conductivity sensor under running water to remove loose material.
2. Follow Cleaning Procedure 1. If debris is still present, progress to the next cleaning
procedure. If the debris is removed, skip to the last step.