Hanna Instruments Marine Instruments Turbidity and Free/Total Chlorine Meter User Manual

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SPECIFICATIONS
Turbidity
Range 0.00 to 9.99; 10.0 to 99.9 and 100 to 1000 NTU
Range selection Automatically
Resolution 0.01 NTU from 0.00 to 9.99 NTU;
0.1 NTU from 10.0 to 99.9 NTU;
1 NTU from 100 to 1000 NTU
Accuracy ±2% of reading plus 0.02 NTU
Repeatibility ±1% of reading or 0.02 NTU, whichever is greater
Stray Light < 0.02 NTU
Typical EMC Deviation ±0.05 NTU
Light Detector Silicon Photocell
Method Ratio Nephelometric Method (90°), ratio of scatter and
transmitted light; Adaptation of the USEPA Method 108.1
and Standard Method 2130 B.
Measuring mode Normal, Average, Continuous.
Turbidity Standards <0.1, 15, 100 and 750 NTU
Calibration Two, three or four-point calibration
Free and total Chlorine
Range Free Cl
2
0.00 to 5.00 mg/L
Total Cl
2
0.00 to 5.00 mg/L
Resolution 0.01 mg/L from 0.00 to 3.50 mg/L; 0.10 above 3.50 mg/L
Accuracy ±0.02 mg/L @ 1.00 mg/L
Typical EMC Deviation ±0.02 mg/L
Detector Silicon photocell with 525 nm narrow band interference filters
Method Adaptation of the USEPA Method 330.5 and Standard Method
4500-Cl G. The reaction between chlorine and DPD reagent
causes a pink tint in the sample.
Standards 1 mg/L free chlorine, 1 mg/L total chlorine
Calibration One-point calibration

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