This document is an instruction manual for the HI 96725C Chlorine, Cyanuric Acid & pH meter produced by Hanna Instruments. The manual provides information on the specifications, precision and accuracy, principle of operation, functional description, errors and warnings, startup process, measurement and calibration procedures, etc.
The HI 96725C is an auto-diagnostic portable microprocessor meter designed for measuring free and total chlorine, cyanuric acid, and pH. It features an advanced optical system with a tungsten lamp and narrow band interference filter, ensuring accurate and repeatable readings in field applications. The device includes a CAL CHECK validation function and is splash waterproof with a transparent cup protecting the lamp and filter units.
| Free Chlorine Range | 0.00 to 5.00 mg/L |
|---|---|
| Total Chlorine Range | 0.00 to 5.00 mg/L |
| Cyanuric Acid Range | 0 to 80 mg/L |
| pH Range | 6.5 to 8.5 |
| Free Chlorine Accuracy | +0.03 mg/L +3% of reading @ 25°C |
| Cyanuric Acid Accuracy | +1 mg/L +15% of reading @ 25°C |
| pH Accuracy | +0.1 pH @ 25°C |
| Light Source | Tungsten lamp |
| Light Detector | Silicon Photocell with narrow band interference filter @ 525nm |
| Environment Temperature | 0 to 50°C (32 to 122°F) |
| Battery Type | 1x9 volt |
| Auto-Shut off (Measurement) | After 10' of non-use |
| Auto-Shut off (Calibration) | After 1 hour of non-use |
| Dimensions | 192 x 104 x 69 mm (7.8 x 4.1 x 2.7") |
| Weight | 360 g (12.7 oz) |
The meter measures free and total chlorine, cyanuric acid, and pH values.
It turns off after 10 minutes in measurement mode or 1 hour in calibration mode.
It allows the user to validate the good performance of the instrument at any time using NIST traceable standards.