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| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Region of Manufacture | Domestic (China) |
| Model | TR-901 |
| Price | USD 920 (FOB Shanghai) |
| Instrument Type | Laboratory & Field-Portable Soil ORP Meter |
| Measurement Principle | Potentiometric Redox Potential (Eh) Determination via Dual-Electrode Cell |
| Compliance | HJ 746–2015 (Chinese EPA Standard for Soil Oxidation-Reduction Potential Determination by Potentiometry) |
| Protection Rating | IP65 |
| Power Supply | Rechargeable Li-ion Battery (USB-C input compatible with external power banks) |
| Data Storage | 500 measurement records with timestamp, temperature, and electrode status metadata |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | YHBJ-262 |
| Instrument Type | Laboratory-Grade Portable ORP and pH Meter |
| ORP Range | (−2000.0 to +2000.0) mV |
| ORP Resolution | 0.1 mV |
| ORP Accuracy (Electronic Unit) | ±0.1% or ±0.3 mV |
| ORP Repeatability (Electronic Unit) | 1 mV |
| ORP System Accuracy | ±15 mV |
| pH Range | −2.00 to 20.00 |
| pH Resolution | 0.01 |
| pH Accuracy (Electronic Unit) | ±0.01 pH |
| pH Repeatability (Electronic Unit) | 0.005 pH |
| Input Current | ≤1 × 10⁻¹² A |
| Input Impedance | ≥1 × 10¹² Ω |
| pH System Accuracy | ±0.02 pH |
| pH System Repeatability | 0.01 pH |
| Temperature Range | −5.0 to 110.0 °C |
| Temp Resolution | 0.1 °C |
| Temp Accuracy (Electronic Unit) | ±0.2 °C |
| Temp System Accuracy | ±0.4 °C (0.0–60.0 °C), ±1.0 °C (other ranges) |
| IP Rating | IP65 |
| Data Storage | 500 measurement records |
| Power | Rechargeable Li-ion battery |
| Dimensions | 80 × 225 × 35 mm |
| Weight | 0.4 kg |
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