The HI 727 Colorimeter is a portable instrument for measuring the visible color of water. It uses the Standard Methods for the Examination of Water and Wastewater 21st edition, Colorimetric Platinum Cobalt method for measurement. The instrument has auto-calibration, zero-setting, and auto-shut off features.
The document is a user guide for the Hanna Instruments HI 727 Color of Water meter. It details the functional description, technical specifications such as range (0 to 500 PCU) and accuracy (±10 PCU), and lists included accessories like sample cuvettes and batteries.
The manual outlines the step-by-step measurement procedure for determining apparent color and true color in water samples. It also covers error indications, battery management, safety recommendations, and a list of required and optional accessories.
| Range | 0 to 500 PCU |
|---|---|
| Resolution | 5 PCU |
| Accuracy | ±10 PCU ± 5 % of reading @ 25 °C/ 77 °F |
| Light Source | Light Emitting Diode @ 470 nm |
| Light Detector | Silicon Photocell |
| Battery Type | 1x 1.5V AAA |
| Dimensions | 81.5 x 61 x 37.5 mm (3.2 x 2.4x1.5) |
| Weight | 64 g (2.25 oz) |
The meter has a range from 0 to 500 PCU.
The meter automatically turns off after 10 minutes of non-use.
The instrument requires one 1.5V AAA battery.
It uses the adaptation of the Standard Methods for the Examination of Water and Wastewater, Colorimetric Platinum Cobalt method.