The pHC-2 is a compact handheld pH meter with ±0.05 pH accuracy and 0.01 pH resolution. Features LCD display, 1–3 point auto-calibration, measurement hold, exceed-limit alarm and battery monitoring. Lightweight at 0.2 kg — ideal for field measurement, educational use and routine on-site pH testing.
The pHC-2 portable pH meter is a compact, lightweight handheld instrument designed for on-site pH measurement in the field, classroom and general laboratory environments. Weighing just 0.2 kg with a slim 120×40×34 mm body and vertical display orientation, it is easy to carry and operate with one hand — making it a practical tool for water quality spot checks, agricultural soil testing, food safety screening and educational demonstrations.
With 0.01 pH resolution and ±0.05 pH accuracy, the pHC-2 delivers a meaningful step up in precision over basic pocket testers, while remaining simple enough for operators with minimal instrument experience. Auto-calibration at 1 to 3 points with automatic buffer recognition (pH 4.00, 6.86 and 9.18) keeps field calibration quick and straightforward.
Practical features include a measurement hold function that freezes the display for easy recording, an exceed-limit alarm for out-of-range alerts, electrode and battery monitoring, a self-check function and a power-saving mode to extend battery life in the field.
| Model | pHC-2 |
| Measuring Range | 0 ~ 14.00 pH |
| Resolution | 0.01 pH |
| Basic Error | ±0.05 pH |
| Stability | (±0.03 pH ± 1 digit) / 3h |
| Included Electrode | B5 / C2 |
| Electrode Connector | BNC |
| Display | LCD + LED backlight |
| Electrode Holder | — |
| Temperature Compensation | — |
| Calibration | 1–3 point |
| pH Buffer | Auto-ID: pH 4.00 / 6.86 / 9.18 |
| Data Storage | — |
| Connectivity | — |
| Printing | — |
| Prompt Tone | — |
| Power Supply | DC 3.0V |
| Operating Temperature | 5°C ~ 40°C |
| Relative Humidity | ≤80% |
| Dimensions (mm) | Approx. 120 × 40 × 34 mm |
| Weight (kg) | 0.2 |
Both are compact handheld pH meters with the same form factor (120×40×34 mm, 0.2 kg) and feature set. The key difference is precision: the pHC-2 offers 0.01 pH resolution and ±0.05 pH accuracy with stability of ±0.03 pH/3h, while the pHB-6 provides 0.1 pH resolution and ±0.2 pH accuracy. Choose the pHC-2 when more precise field readings are needed; the pHB-6 suits applications where a basic indicative reading is sufficient.
The pHC-2 is a compact LCD handheld meter for simple field and educational use. The pHB-7 is a more advanced portable instrument with a 3.5-inch color TFT touchscreen, 1500-point data storage, GLP printing, three-level user management, USB Type-C connectivity and a built-in lithium battery with PC charging. The pHC-2 is lighter and simpler; the pHB-7 is suited to professional field work requiring data traceability and connectivity.
No. The pHC-2 does not measure temperature and does not have a temperature compensation function. It is designed for use at ambient temperatures (5–40°C). For applications where sample temperature varies significantly and compensation is needed, consider the pHB-7, which supports automatic temperature compensation from -5.0°C to 110.0°C via an included T-820D temperature probe.
The pHC-2 is powered by a DC 3.0V battery. Battery life depends on usage frequency and display backlight use. The built-in battery monitoring function displays remaining battery level, and the power-saving mode helps extend battery life during field use by reducing display activity when the instrument is idle.
The measurement hold function freezes the current pH reading on the display when activated. This is useful when measuring in locations where it is difficult to read the display directly — for example when the electrode is submerged in a sample vessel or in an awkward position. The held reading can be recorded at a convenient moment before releasing.
Yes. The pHC-2 is well suited to school and university teaching environments. Its compact size, simple push-button operation, automatic buffer recognition and clear LCD display make it accessible for students with no prior instrument experience. The self-check function and battery monitoring add a layer of reliability assurance for shared instrument use.
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