This is an instruction manual for HI 9124 and HI 9125 Portable Waterproof pH Meters
This manual provides instructions for the Hanna Instruments HI 9124 and HI 9125 portable waterproof pH meters. These rugged, hand-held instruments are designed to provide laboratory results and accuracy under harsh industrial conditions. The devices feature a large multi-level LCD with automatic temperature compensation and support up to five auto-recognized buffers (4.01, 6.86, 7.01, 9.18, and 10.01). The HI 9125 model additionally supports ORP measurements.
| pH Range | -2.00 to 16.00 pH |
|---|---|
| mV Range (HI 9125 only) | 699.9 mV / ±1999 mV |
| Temperature Range | -20.0 to 120.0 °C (4.0 to 248.0 °F) |
| Temperature Resolution | 0.1 °C (0.1 °F) |
| Input Impedance | >10^12 ohms |
| Battery Type & Life | 3 x 1.5V AAA batteries, approx. 200 hours |
| Weight | 300 g (10.6 oz) |
The pH calibration procedure is automatic with 5 auto-recognized buffers: 4.01, 6.86, 7.01, 9.18 and 10.01.
The batteries provide approximately 200 hours of continuous use.
Yes, you can disable the auto-off feature by accessing the Setup Menu.