Observator Instruments ANALITE NEP-5000 Manual page 80

2. It is recommended to use quality distilled water as dissolved solids – 3 parts per
1,000,000. Please note, accurate bottom end calibration is essential for low range
turbidity measurements.
3. It is recommended to use UV absorbent bottles. The UV absorbent bottles help to
minimize the light bouncing effect caused by the container's wall.
It important that the user also isolates external UV light (UV present in ambient light)
entering to the sensor during the calibration process.
4. Use appropriate wash solutions, in a wash cup containing distilled water to avoid
cross-contamination of solutions when moving from one solution to the other.
5. Air duster or a cleaning/wiping cloth
Figure 11.3.D: Prepare an air duster or a cleaning cloth
Observator Instruments
Figure 11.3.B: Use UV absorbent bottles
Figure 11.3.C: Prepare a wash cup
Page 80
NEP-5000 MANUAL
V2019-08-29
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