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| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | PHBJ-260 |
| Instrument Type | Portable |
| Parameter Type | Single-parameter (pH/mV/T) |
| Measurement Range | 0.00–14.00 pH |
| Resolution | 0.01 pH |
| Accuracy | ±0.01 pH ±1 digit |
| Temperature Compensation | Manual/Automatic (0–99 °C) |
| Display | Backlit LCD with blue illumination |
| Data Storage | 200 sets |
| Interface | RS-232 |
| IP Rating | IP65 |
| Power Supply | 4 × AA alkaline batteries |
| Buffer Options | Five selectable Chinese-standard pH calibration solutions |
| Measurement Modes | pH, mV (ORP), and temperature (−5.0–105.0 °C) |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | PHSJ-3F |
| Instrument Type | Benchtop |
| Parameter Type | Single-Parameter (pH/mV/T) |
| Measurement Range | –2.000 to 20.000 pH |
| Resolution | 0.01 pH |
| Accuracy | ±0.01 pH ±1 digit |
| Temperature Compensation | Automatic or Manual (–5.0 to 135.0 °C) |
| Buffer Recognition | Auto-detection of 5 standard Chinese calibration buffers |
| Calibration Points | Up to 3-point pH calibration |
| Isoelectric Point Options | 3 selectable (for ultrapure water, boiler water, and low-ionic-strength samples) |
| Data Storage | 500 GLP-compliant measurement records |
| Interface | USB port with dedicated PC communication software |
| Display | Dot-matrix LCD with simultaneous readout of pH, mV, temperature, electrode slope, isoelectric point, mode, date/time |
| Enclosure Material | Flame-retardant polycarbonate (PC) front panel |
| Power | AC adapter with battery backup (data protection during power loss) |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | PHS-3C |
| Instrument Type | Benchtop |
| Parameter Type | Single-Parameter (pH/mV) |
| Measurement Accuracy | ±0.01 pH ±1 digit |
| Measurement Range | pH: 0.00–14.00 |
| mV | −1999–+1999 |
| Resolution | 0.01 pH |
| Input Impedance | 1 × 10¹² Ω |
| Stability | ±0.01 pH ±1 digit / 3 h |
| Temperature Compensation Range | 0–60 °C |
| Display | 3½-digit LED |
| Calibration Options | One-point or two-point calibration |
| Compliance | Meets Chinese National Standard GB/T 24375–2009 for laboratory pH meters |
| Power Supply | AC 220 V ± 22 V, 50 Hz ± 1 Hz |
| Dimensions | 290 × 210 × 95 mm |
| Weight | 1.5 kg |
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