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| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Country of Origin | China |
| Model | ZD-2 |
| Pricing | Available Upon Request |
| Display | High-Resolution LCD |
| Measurement Modes | Manual Titration, Automatic Endpoint Titration, Controlled-Drop Titration |
| Measurable Parameters | mV (–1400 to +1400 mV, 1 mV resolution), pH (0.00–14.00, 0.01 pH resolution), Temperature (0–100 °C, 0.1 °C resolution) |
| Electrode Support | pH composite electrode, Ag electrode, reference electrode, temperature sensor |
| Calibration | Up to 2-point manual or automatic pH calibration |
| Compensation | Automatic/manual temperature compensation |
| Interface | RS-232 for printer output |
| Stirring | Integrated JB-11 magnetic stirrer |
| Burette Compatibility | External 10 mL or 25 mL burettes |
| Accuracy | ±0.35% FS for mV (±4.9 mV), ±0.03 pH, ±0.5 °C (0–60 °C), ±2.5% volumetric error, 0.3% repeatability |
| Endpoint Detection Sensitivity | ±5 mV or ±0.1 pH |
| Endpoint Delay Adjustment | Adjustable (±2 s error) |
| Power | AC 100–240 V input, DC 20 V output |
| Dimensions & Weight | 218 × 180 × 66 mm, ~0.7 kg |
| Operating Environment | 0–40 °C, ≤85% RH |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Region of Origin | Domestic (China) |
| Model | ZD-1A |
| Price Range | USD 700 – 1,400 |
| Burette Capacity | 10 mL |
| Volume Measurement Range | 0.01–99.99 mL |
| Accuracy (Volume Error) | ±0.025 mL |
| Repeatability | ≤0.01 mL |
| Minimum Increment | 0.01 mL |
| Operating Temperature | 5–35 °C |
| Relative Humidity | ≤85% RH |
| Control Unit Dimensions | 170 × 160 × 60 mm |
| Dispensing Unit Dimensions (incl. 1 L reagent bottle) | 200 × 100 × 470 mm |
| Net Weight | ~1.5 kg |
| Power Supply | Rechargeable Li-ion battery |
| AC/DC adapter (Input | 100–240 V AC, Output: 5 V DC) |
| Liquid Handling Modes | Fixed-volume dispensing & Dynamic titration mode |
| Valve Functionality | Bidirectional (titration / reflow) |
| Adjustable Parameters | Rinse cycles (user-defined), refill speed (3 levels), drain speed (3 levels), burette calibration factor storage |
| Display | Backlit LCD with brightness adjustment |
| Power Management | Low-battery indicator, charging status feedback, auto-power-off |
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