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| Brand | Beifen Sanpu |
|---|---|
| Origin | Hebei, China |
| Manufacturer Type | Direct Manufacturer |
| Product Type | Portable pH Meter |
| Model | PHS-3C |
| Measurement Range | 0.00–14.00 pH / ±1999 mV |
| Resolution | 0.01 pH / 1 mV |
| Accuracy | ±0.01 pH (electronic unit) / ±0.02 pH (system, including electrode) |
| Temperature Compensation Range | 0–60 °C |
| Input Impedance | ≥1 × 10¹² Ω |
| Input Current | ≤2 × 10⁻¹² A |
| Stability | ±0.01 pH ±1 digit / 3 h |
| Repeatability | ≤0.01 pH |
| Display | 3½-digit LED |
| Power Consumption | ≤5 W |
| Dimensions (L×W×H) | 260 × 190 × 70 mm |
| Weight | 1.5 kg |
| Operating Environment | 5–40 °C, RH ≤85%, AC 220 V ±10%, 50 Hz |
| Calibration | One-point or two-point with standard USA pH buffers |
| Compliance | Meets Chinese National Standard JJG 919–2008 (pH meter verification regulation), aligned with ISO 7027 and ASTM D1293 for aqueous pH measurement traceability |
| Brand | Sanpu |
|---|---|
| Model | PHS-2000 |
| Type | Portable Pen-Style pH Meter |
| Measurement Range | 0.0–14.0 pH |
| Resolution | 0.1 pH |
| Accuracy | ±0.2 pH |
| Temperature Compensation | Automatic (0–50 °C) |
| Power Supply | 4 × 1.5 V AG-13 button cells |
| Battery Life | ~1000 hours |
| Dimensions | 142 × 29 × 15 mm |
| Weight | 65 g |
| Calibration Buffers | pH 6.86 (phosphate), pH 9.18 (borax) or pH 14.00 (potassium hydrogen phthalate) |
| IP Rating | IP67 (dust-tight and immersion-resistant up to 1 m for 30 min) |
| Compliance | Meets GB/T 11165–2022 (Chinese national standard for laboratory pH meters) |
| Brand | Beifen Sanpu |
|---|---|
| Origin | Hebei, China |
| Manufacturer Type | OEM Manufacturer |
| Product Category | Domestic |
| Model | PHS-2C |
| Price Range | USD 70–140 |
| Instrument Type | Portable |
| Parameter Types | pH and mV |
| Measurement Range | pH 0.00–14.00 |
| Resolution | 0.01 pH / 1 mV |
| Accuracy | ±0.05 pH / ±0.5% F.S. (mV) |
| Temperature Compensation Range | 0–60.0 °C |
| Input Impedance | ≥3×10¹¹ Ω |
| Stability | ≤0.05 pH ±1 digit / 2 h |
| Calibration | One-point or Two-point (using USA-standard buffer solutions) |
| DC Output | 0–±2 V analog signal |
| Instrument Class | 0.02/0.05 grade |
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