pH/EC/TDS&Temperature Water Quality Pen
Why is it indispensable in daily life?
it can be used for drinking water，food processing，fish tank，aquariums，swimming pools，lab，and farmland so on
Packing list:
1 * pH meter
3 * pcs ph power buffer
1 * manual in English
PH CALIBRATION
1.Pour suitable amount of standard buffer solution pH6.86, pH4.00 and pH9.18 (at 25°C) separately into different clean beakers;
2.For accurate calibration, fill 1 buffer solution into 2 beakers. One is used for cleaning the electrode, and the other one is used for calibration. By doing so, the pollution level can be reduced to the least.
3. Press the "power button" key to turn on the power.
4.Dip the meter into standard buffer solution pH6.86, then stir gently until the value is stable, and long press the “TEMP/CAL” key for about 5 seconds When the screen display“6.86” to enter the pH6.86 automatic correction mode (the meter can automatically identify standard buffer solution of pH4.00 and pH6.86). While displayed value becomes same as the standard buffer solution at that temperature, the calibration is finished.
5.Clean the electrode. Dip the meter into standard buffer solution pH4.00, and while the display value is stable, long press the “TEMP/CAL” key for 5 minutes When the screen display“4.01” to enter the pH4.01 automatic calibration mode. When display value becomes same as the standard buffer solution at that temperature, the calibration is finished.
6.Cleaning the electrode. Dip the electrode into the standard buffer solution of pH9.18 and gently stir until the display value is stable. If the error of display value is in the allowable range, then calibration is finished. If not, repeat 4 , 5.
NOTICE:
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.
EC CALIBRATION
1.Turn on the meter.Press the“MODE” button, choice the EC-us for measuring .
2.Immerse the electrode in the distilled water . Activate it about five minutes.
3.Immerse the electrode in EC calibration solution 12880us/cm (at 25°C).And stir it gently .
4. Unscrew the battery compartment cap on the top of the meter.
5. Allow the reading to stabilize and with a small screwdriver turn the calibration trimmer until the display shows “12880”.
6. Rinse the electrode with distilled water and suck it with filter paper.
7. immerse the electrode in EC calibration solution 1413us/cm(at 25°C).And stir it gently .until the display value is the same as the value of calibration solution or approaching the value in the error range.
8. rinse the electrode with distilled water and suck it with filter paper .Replace the battery compartment cap.
The calibration of the instrument`s EC range is now complete.
Q:What if the quality problem is found?
A: Please contact the customer in the first time, and explain the problem. If the quality problem is found within one week after receiving the product, we will provide free return and replacement of the product
Q:Does the product include batteries？What is the batteries number?
A: Products shipped from overseas warehouses in Russia will include batteries. If shipped from China, batteries will be removed and sent. The battery model is LR44, which can be purchased from local stores
