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	PH DO testing range 0-14PH Pressure enduring 0.4-0.6MPa temperature 60°C-130°C Size 120 ,170, 200, 225, 325, 425(mm) DO DO testing range 0-200％ Pressure enduring 0.4-0.6MPa temperature 60°C-130°C Size 120, 225, 325(mm)   ferment PH、DO electrode
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