The HI9125 is a robust, waterproof, high-spec portable pH and mV meter that offers the added benefit of being able to measure ORP. This meter offers many features such as automatic calibration, automatic shutdown, battery error prevention system, on-screen instructions and automatic temperature compensation. The HI9125 is supplied with the meter, PEI plastic housing, dual-junction pH electrode and temperature probe packed in a durable plastic carrying case.
Water Resistant – Can withstand temporary exposure to water, but should not be submerged or washed under running water.
Replaceable Electrode – No need to replace the whole meter when the electrode needs replacing. Spare and replacement electrodes are available for this product.
The HI 9125 is a waterproof pH meter using ORP (oxidation reduction potential) electrodes. Large dual level LCD displays both pH and temperature along with operational guide. Graphic symbols are displayed to assist users during the calibration process.
The pH calibration procedure is automatically stored in five memory pH buffer values and Buffer recognition to facilitate the calibration process. This meter uses the Hawaiian 1230B double junction pH electrode. Double junction helps to minimize junction contamination for accurate, consistent results.
Range - pH | -2.00 to 16.00 pH |
Range - mV | ±699.9 mV; ±1999 mV |
Range - Temperature | 20.0 to 120.0°C / -4.0°F to 248.0°F |
Resolution - pH | 0.01 pH |
Resolution - mV | 0.1 mV; 1 mV |
Resolution - Temperature | 0.1 ° C / 0.1 ° F |
Accuracy - pH | ± 0.01 pH |
Accuracy - mV | ± 0,2 mV; ± 1 mV |
Accuracy - Temperature | ± 0,4 ° C / ± 0,8 ° F |
pH Calibration | automatic 1 or 2 point with 5 memorised buffer values (4.01, 6.86, 7.01, 9.18, 10.01) |
Offset Calibration | ± 1 pH |
Slope Calibration | From 80 to 108% |
Temperature Compensation | automatic or manual, -20 to 120°C (-4 to 248°F) |
pH Electrode | HI 1230B, double junction, gel filled, BNC connector and 1 m (3.3’) cable (included) |
Temperature Probe | HI 7662 with 1 m (3.3’) cable (included) |
Input Impedance | 10¹² Ohm |
Battery Type / Life | (4) 1.2V AAA rechargeable / approx 200 hours of continuous use (with backlight off); auto-off after 20 minutes of non-use (can be disabled) |
Environment | 0 to 50°C (32 to 122°F); RH max 100% |
Dimensions | 192 x 71.6 x 36 mm (7.5 x 2.8 x 1.4 inch) |
Weight | 525 g (18.5 oz.) |