Horiba Scientific LAQUAtwin B-74 Series Manual page 61

 Sampling sheet
If tiny particles are contained in a sample, such as an extract from soil, the
particles influence measurement results. Use the sampling sheet holder
cover (part No. 3200459736) and sampling sheet B (part No. 3200053858)
sold separately to counteract the influence.
1.
Replace the light shield cover with the sampling sheet holder
cover.
2.
Put a piece of sampling sheet B on the flat sensor and close the
sampling sheet holder cover.
3.
Put 4 or 5 drops of sample on the sampling sheet B.
Light shield cover
Sampling sheet holder cover
Note
The sampling sheet holder cover does not shield the sensor from light,
which affects the sensor. When using the sampling sheet holder cover,
shield the flat sensor from light with an alternative.
Sampling sheet B
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