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The pH scale, which commonly spans from 0 to 14, plays a crucial role in determining the acidity or alkalinity of a solution. To attain precise pH measurements, it is imperative to consider the impact of temperature on pH values. Consequently, temperature compensation becomes an indispensable feature in any pH Meter. The Nernst equation, a fundamental formula in pH measurement, elucidates the direct correlation between temperature and pH values. As temperature rises or falls, pH readings can fluctuate, potentially leading to inaccuracies in assessments of a solution's acidity or alkalinity. Therefore, pH meters are equipped with temperature compensation mechanisms to counteract these temperature-induced variations and provide dependable pH measurements under diverse thermal conditions.
Portable PH Meter LMPH-401 Catalog
| pH | -2.00 - 20.00 pH, 0.01pH, , 1 to 3 points, USA (4.01/7.00/10.01), NIST (4.01/6.86/9.18) |
| ORP | ±1999mV, 1 mV, ±1 mV |
| Temperature | 0 - 105°C/32 - 221°F, 0.1°C/0.1°F, ±0.5°C/±0.9°F, 1 point, reading ±10°C |
| Temperature Compensation | 0 - 100°C, manual or automatic |
| Slope/Offset Display | Yes |
Portable pH Meter LMPH-403 Catalog
| PH Measurement Range | -2.000 to 20.000 pH |
| PH Resolutions | 0.001, 0.01, 0.1 pH, selectable |
| PH Accuracy | ±0.002 pH |
| PH Calibration | 1 to 5 points |
| PH Buffer Options | USA, NIST, DIN, 2 custom buffers |
Portable PH Meter LMPH-402 Catalog
| pH | -2.00 - 20.000 pH, 0.001, 0.01, 0.1pH, selectable, ±0.002pH, 1 to 5 points, USA, NIST, DIN, 2 custom buffers |
| ORP | ±1999.9mV, ±1999.9mV, 0.1, 1mV, selectable, ±0.2mV, 1 point |
| Temperature | 0 - 105°C/32 - 221°F, 0.1°C/0.1°F, ±0.5°C/±0.9°F, 1 point, reading ±10°C |
| Temperature Compensation | 0~100°C, manual or automatic |
| Stability Criteria | Low or high |