1. If your sample water is very clear, you might want to let the Turbidity Sensor
warm up for about five minutes to assure a stable voltage.
2. Enter the calibration routine for your data-collection program.
3. First Calibration Point: Obtain the cuvette containing the Turbidity Standard
(100 NTU) and gently invert it four times to mix in any particles that may have
settled to the bottom. Important: Do not shake the standard. Shaking will
introduce tiny air bubbles that will affect turbidity readings.
4. Wipe the outside of the cuvette with a soft, lint-free cloth or tissue.
5. Holding the standard by the lid, place it in the Turbidity Sensor. Align the mark
on the cuvette with the mark on the Turbidity Sensor. Important: These marks
must be aligned whenever a reading is taken.
6. Close the lid.
7. Enter 100 as the value in NTU.
8. Remove the standard.
9. Second Calibration point: Prepare a blank by rinsing the empty cuvette with
distilled water, then filling it to the top of the line with distilled water.
Important: The bottom of the meniscus should be at the top of the line for every
measurement throughout this test. This volume level is critical to obtain correct
turbidity values.
10.Screw the lid on the cuvette. Wipe the outside with a soft, lint-free cloth or tissue.
11.Holding the cuvette by the lid, place it into the slot of the Turbidity Sensor. Make
sure that the marks are aligned. Close the lid.
12.Enter 0 as the value in NTU. You are now ready to collect turbidity data.