Hach ORBISPHERE Series Basic User Manual page 16

8. On the clean polishing cloth (2934) do the steps that follow:
a. Add a few drops of water.
b. Spread a little of the polishing powder (29331) to form a grey, milky liquid.
9. Screw the polishing tool (DG33629) onto the top of the sensor.
10. Polish the electrodes by moving the sensor face in a circular direction against the liquid in the
polishing cloth for about 30 seconds.
11. Remove the polishing tool from the sensor. Remove any polish deposits by rinsing the sensor
head under a tap for 30 seconds, aiming the jet of water directly onto the sensor head.
Note: If the sensor is used in high level hydrogen sample, do not perform the following steps but continue at
step 19.
12. Remove the plastic base from the bottom of the sensor and connect the sensor to the sensor
cleaning and regeneration center (32301).
16 English