The DDB-2 is a compact handheld conductivity meter with LCD display, specialised for low-conductivity measurement from 0.0 to 199.9 μS/cm with 0.1 μS/cm resolution and ±1% FS accuracy. Supplied with DDB-2 (bright) electrode. At 120×40×34 mm and 0.2 kg, it is ideal for purified water, distilled water and low-conductivity environmental water monitoring.
The DDB-2 portable conductivity meter is a compact, purpose-built handheld instrument for low-conductivity measurement in the field and laboratory. With a measurement range of 0.0 to 199.9 μS/cm and 0.1 μS/cm resolution, it is specifically designed for applications where sample conductivity is very low — including purified water quality verification, distilled water and deionised water monitoring, rainwater analysis, condensate water testing and low-conductivity environmental water surveys.
Sharing the same compact 120×40×34 mm form factor and 0.2 kg weight as the DDB-1, the DDB-2 is equally easy to carry and operate in the field. The key distinction is its dedicated focus on the low end of the conductivity scale, paired with the DDB-2 (bright) platinum electrode — optimised for accurate measurement at very low conductivity values where standard black electrodes can introduce measurement errors.
Without temperature compensation, data storage or connectivity, the DDB-2 is designed for direct, immediate readings — suited to routine quality checks and screening where results are read from the display and recorded manually.
| Model | DDB-2 |
| Measuring Range | 0.0 ~ 199.9 μS/cm |
| Resolution | 0.1 μS/cm |
| Accuracy (±) | ±1% FS |
| Included Sensor | DDB-2 (bright) |
| Optional Sensors | — |
| Electrode Connector | BNC |
| Display | LCD |
| Electrode Holder | — |
| Temperature Compensation | — |
| Calibration | Electrode Constant |
| Data Storage | — |
| Connectivity | — |
| Printing | — |
| Power Supply | DC 9V |
| Operating Temperature | 10°C ~ 30°C |
| Relative Humidity | ≤80% |
| Dimensions (mm) | Approx. 120 × 40 × 34 mm |
| Weight (kg) | 0.2 |
Both share the same compact form factor (120×40×34 mm, 0.2 kg), LCD display and basic operation. The DDB-2 covers 0.0 to 199.9 μS/cm with 0.1 μS/cm resolution — designed for very low-conductivity samples such as purified, distilled and deionised water. The DDB-1 covers 0 to 10.00 mS/cm — suited to general freshwater and drinking water applications. The DDB-2 also uses a bright platinum electrode rather than a black electrode, which is better suited to accurate measurement at very low conductivity values. Choose based on your expected sample conductivity range.
Black electrodes (platinised platinum) are optimised for higher-conductivity measurements. Bright (unplatinised) platinum electrodes are better suited to very low-conductivity samples because they have a lower cell constant and introduce less polarisation error at the low end of the conductivity scale. The included DDB-2 (bright) electrode is specifically selected to ensure accurate measurement within the 0.0 to 199.9 μS/cm range.
The DDB-2 is designed for applications where sample conductivity is very low, including purified water and laboratory reagent water quality checks, pharmaceutical water for injection (WFI) and purified water (PW) screening, distilled and deionised water monitoring, boiler condensate testing, rainwater and atmospheric deposition surveys and low-conductivity environmental water sampling.
No. The DDB-2 does not have temperature measurement or compensation. It operates at ambient temperatures of 10–30°C. For low-conductivity applications requiring temperature compensation — particularly pharmaceutical or laboratory water where temperature may vary — consider the DDB-411, which supports auto temperature compensation from -5.0°C to 110.0°C.
The DDB-2 uses electrode constant calibration. The constant is set to match the included DDB-2 (bright) electrode, ensuring accurate readings within the 0.0 to 199.9 μS/cm range. No standard solution or buffer is required for calibration.
Both can measure in the low μS/cm range, but the DDB-11A has a broader range (up to 100.0 mS/cm) and supports optional electrode changes and manual temperature compensation. The DDB-2 is dedicated to the 0.0 to 199.9 μS/cm range with 0.1 μS/cm resolution, making it more precise for very low-conductivity samples. If your application focuses exclusively on purified or low-conductivity water, the DDB-2’s dedicated design and bright electrode give it an advantage at the low end of the scale.
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