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Step 7) Remove the sensor and rinse in distilled water. Dry the sensor
and clean the lenses with alcohol.
Step 8) Disconnect the green wire and connect the white wire to the
positive input of the current meter.
Step 9) Place the sensor in the clamp above the 1000 NTU solution. If
necessary, use a lint free cotton swab bent at 90º to remove
any air bubbles from underneath the detector window.
Step 10) Record the output current of the sensor, 1000NTU = _______.
Step 11) Remove the sensor and rinse in distilled water. Dry the sensor.
VI.
Appendix B: Turbidity Standard Solutions
The following turbidity standards are available from Global Water, contact the Sales
Department or Technical Support for more information.
These are EPA approved primary standards that are safe, non-toxic and disposable.
They are easy-to-use with no dilution or re-suspension needed. Their inherent
stability means they do not settle from suspension and require no stirring. The
convenient submicron polymer suspensions are non-toxic primary calibration
standards approved by the US EPA for drinking water analysis for turbidity, and
preferred by the U. S. Geological Survey for turbidity and sediment transport
analysis.
Part Number
Description
02-003
0.0 NTU Turbidity Standard
02-004
50
NTU
Turbidity
Standard
02-005
100
NTU
Turbidity
Standard
02-006
1000
NTU
Turbidity
Standard
