Horiba Scientific LAQUAtwin B-74 Series Manual page 60

 Immersion
1.
Open the sliding cap on the light shield cover.
2.
Immerse the sensor into the sample and stir gently 2 or 3 times.
Sliding cap
 Scooping
1.
Open the sliding cap on the light shield cover.
2.
Immerse the sensor into the sample and stir gently 2 or 3 times,
and then scoop up some of the sample with the sensor.
3.
Place the meter flat and confirm that the sample covers the entire
flat sensor.
4.
Close the light shield cover.
Sliding cap
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