Hanna Instruments 14pH 0pH 0.01pH ±0.05pH +60 °C 0°C 0.1°C ±0.5 °C 3999µS/cm Hanna Instruments 14pH 0pH 0.01pH ±0.05pH +60 °C 0°C 0.1°C ±0.5 °C 20mS/cm Hanna Instruments 14pH 0pH 0.1pH ±0.1pH ‑ ‑ ‑ ‑ ‑ Testo 14pH 0pH 0.01pH ±0.02pH +60 °C 0°C 0.1°C ±0.4 °C ‑
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