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PH meter

PH STAR METER

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Measuring Range:

0.0-14.0pH

Resolution:0.1pH

Accuracy: 0.2pH

0.1pH(at 20 /68 F)

Batteries: 3 1.5V

(AG-13 Button Battery )

Duration: 700hrs

 

PH Calibration

1.Immerse the electrode in pH 6.86(under he temperature of 25 ) standard

buffer solution of phosphate, and gently shake the electrode.

2.Regulate the trimmer with a screwdriver until the buffer solution value

corresponding to the measurement temperature is obtained.

3.Immerse the electrode in pH4.01 or pH 9.18 standard buffer solution of

borax.

4.After about one minute, until the buffer solution value corresponding to the

measurement temperature is obtained.

 

Important:

After use

The instrument's pH range must be re-calibrated whenever:

The electrode has been used(laid) for long time from the last calibration.

The electrode has been used in particularly taxing conditions.

The utmost accuracy is required.

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