HI 718 iodine meter is a device produced by Hanna Instruments for measuring the concentration of iodine in water. The measurement range is 0.0-12.5ppm, with a resolution of 0.1ppm. The instrument uses a 525nm light source for measurement, and the detection method is the DPD method of the 18th edition of the Standard Methods for the Examination of Water and Wastewater. The principle of the method is that iodine reacts with the reagent to produce a pink color, and the concentration of iodine is calculated by measuring the absorbance.
This document is an instruction manual for the Hanna Instruments HI 718 portable iodine meter. It details the preliminary examination of the device, its functional description including parts identification, and lists included accessories such as sample cuvettes and reagents.
The guide provides step-by-step instructions for performing accurate measurements using the DPD method, including zeroing the instrument, adding reagents, and interpreting display warnings like 'Over Range' or 'Under range'. It also covers battery management, troubleshooting common errors, and lists compatible spare parts.
| Range | 0.0 to 12.5 ppm |
|---|---|
| Resolution | 0.1 ppm |
| Accuracy | 0.1 ppm +5% of reading @ 25°C |
| Light Source | LED @ 525 nm |
| Battery Type | 1 x 1.5V AAA |
| Dimensions | 81.5 x 61 x 37.5 mm |
| Weight | 64 g |
The instrument measures iodine concentrations from 0.0 to 12.5 ppm.
One fresh battery lasts for a minimum of 5000 measurements, depending on light level.
The meter uses an adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th edition, DPD method.