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PHS-25 digital pH meter
1、 The PHS-25 digital pH meter is a 31/2-digit LED digital display pH meter (hereinafter referred to as the instrument)
Product details
1、 The purpose of the instrument
The PHS-25 digital acidity meter is a 31/A 2-digit LED digital display acidity meter (hereinafter referred to as the instrument). The instrument is suitable for sampling and measuring the acidity (pH value) and electrode potential (mV value) of aqueous solutions in laboratories such as research laboratories, pharmaceuticals, factories, schools, chemical engineering, environmental protection, and mining sites. If equipped with appropriate ion selective electrodes, it can serve as a terminal indicator for potentiometric titration analysis.
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2、 Technical characteristics of the instrument
(1) Environmental temperature: 0~+40 ℃;
(2) Relative humidity: ≤ 85%
(3) Temperature of the tested solution: 0-60 ℃
(4) Power supply: 220 ± 22V AC, 50 ± 1Hz
(5) No significant vibration
(6) No external magnetic field interference except for the geomagnetic field
Main parameters of the instrument
(1) Measurement range: pH range: 0-14.00pH mV range: 0-1400mV (automatic polarity display)
(2) Accuracy: PH range: 0.05pH ± 1 character mV range: 0.2% ± 1 character matching accuracy: ≤ 0.05pH ± one word/2h
(3) Input impedance ≥ 5 × 1012Ω?
(4) Zero drift ≤ 0.05pH/3 hours
(5) Solution temperature compensation range: 0-60 ℃ (manual)
（6）31/Two LED displays
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