Chuandi
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| Brand | Chuandi |
|---|---|
| Model | DDB-12B |
| Type | Portable Conductivity Meter |
| Measurement Parameter | Single-parameter (Conductivity) |
| Conductivity Range | 0–20 mS/cm |
| Resistivity Range | 0–1 MΩ |
| Salinity Range | 0.01–0.3 mol/L |
| Temperature Compensation Range | 5–40 °C |
| Accuracy | <1% FS |
| Minimum Resolution | 0.1 µS/cm |
| Electrode Constant Input | User-configurable (for automatic conductivity calculation) |
| Power Supply | Two AA (1.5 V) batteries |
| Operating Ambient | −10 to +60 °C, RH <90% |
| Dimensions | 135 × 65 × 24 mm |
| Weight | <0.16 kg |
| Linearity (Voltage vs. Conductance) | ≥98% |
| Compliance | Designed for field-deployable soil salinity and aqueous solution monitoring in accordance with standard electrochemical measurement practice |
| Brand | Chuandi |
|---|---|
| Model | FJA-6 |
| Measurement Principle | Polarization/Depolarization Potentiometry |
| ORP Range | ±1999.9 mV |
| Resolution | 0.1 mV |
| Accuracy | <10 mV |
| Input Impedance | >10¹⁰ Ω |
| Minimum Measurement Time | 2 min |
| Temperature Compensation | Automatic Ag/AgCl reference electrode potential lookup via integrated thermistor |
| Power Supply | Rechargeable 8.4 V Li-ion battery with protective charging circuit |
| Interface | USB for PC connectivity |
| Operating Modes | Standalone (field-deployable) or PC-synchronized |
| Data Output | Real-time depolarization curves (E vs. log t), automatic equilibrium potential calculation, CSV export |
| Compliance | Designed for ASTM D1129, ISO 10523, and USP <791> electrochemical measurement practices |
| Brand | Chuandi |
|---|---|
| Origin | Jiangsu, China |
| Instrument Type | Universal Potentiometric Titrator |
| Voltage Measurement Range | −1999.9 mV to +1999.9 mV |
| Voltage Resolution | 0.1 mV |
| Voltage Accuracy | ±0.025% of reading ±2 digits |
| Input Impedance | >10¹² Ω |
| Titration Precision | 0.01 mL |
| Minimum Dispensed Volume | 0.001 mL |
| Titration Error | <0.2% (using 0.1 mol/L HCl vs. 0.1 mol/L NaOH) |
| Communication Interface | RS-232 (USB-compatible via adapter) |
| Software Modules | 25 preconfigured titration & analytical methods (potentiometric, photometric, amperometric, coulometric, Karl Fischer water determination, acid-base, redox, complexometric, precipitation, pH-metric, and endpoint detection algorithms) |
| Brand | Chuandi |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | pHB-09B |
| Price | Upon Request |
| Measurement Range | pH 0–14 (0.01 resolution, ±0.02 pH ±1 digit) |
| ORP | ±1999 mV (0.1 mV resolution) |
| pX | Ion-selective electrode standard curve method |
| Temperature | 0–100 °C (operational limit: 60 °C |
| Input Impedance | ≥1 × 10¹² Ω |
| Power Supply | 3.7 V rechargeable Li-ion battery |
| Dimensions | 13.5 × 7 × 2.5 cm |
| Weight | 130 g |