This document describes the technical specifications and functional description of the Hanna Instruments product Iron High Range, as well as possible errors and warning messages.
The Hanna Instruments HI 721 is a portable photometer designed for measuring iron in the high range (0.00 to 5.00 ppm). It utilizes the EPA Phenolphthalein method (3158) and features an LED light source and a silicon photocell detector. The device includes a liquid crystal display, a cuvette holder, and buttons for operation, powered by a single 1.5V AAA battery.
| Range | 0.00-5.00 ppm |
|---|---|
| Resolution | 0.01 ppm |
| Accuracy | ±0.04 ppm or ±2% of reading |
| Light Source | Light Emitting Diode @ 525 nm |
| Light Detector | Silicon Photocell |
| Method | Adaptation of the EPA Phenolphthalein method 3158 |
| Operating Temperature | 0 to 50°C (32 to 122°F) |
| Relative Humidity | Max 95% RH non-condensing |
| Battery Type | 1x 1.5V AAA |
| Dimensions | 81.5 x 61 x 37.5 mm |
| Weight | 64 g |
The measurement range is 0.00 to 5.00 ppm.
It uses an adaptation of the EPA Phenolphthalein method 3158.
The instrument shuts down after 3 minutes of non-use.
One fresh battery lasts for a minimum of 5000 measurements.