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Digital pH Meter 4 in 1 TDS/PH/EC/Temperature Water Quality Tester


17% Off

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We do our best to process & ship all orders as soon as possible. Most orders are processed within 48-72 hours. We process orders between Monday-Friday and do not ship on weekends.
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Shipping MethodCostDelivery Time*
Free Standard ShippingFree7-14 Business Days (Worldwide)
Insured Shipping$3.957-14 Business Days (Worldwide)

*Please note:
These are estimated delivery times only, therefore SINBADLAB is not guaranteeing delivery dates.

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Our orders always include tracking information that is normally sent via email within 48 hours after the order has been shipped.

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About this item

  • 4-in-1 Water Quality Test – pH meter has a three-in-one function, which can measure PH, TDS, EC and temperature with high precision at the same time. All-round measurement of water quality to ensure healthy water quality.
  • High Accuracy Water Tester – High-accuracy algorithm chip and electrode of our digital water ph tester ensure accurate and fast response. Green Backlit LCD Design guarantees that you can read the measuring results in any condition.One-button lock reading function helps lock reading even if the tester is taken out of the sample!
  • Automatic Calibration pH Tester – With high sensitive glass probe, you can get a full measurement range of 0-14pH, 0.01 pH resolution. And pH meter uses a 3-point calibration method, calibrating the electrode to solutions of pH 4.00, pH 6.86, and pH 9.18,You can calibrate effortlessly to ensure the accuracy of your measurements.
  • Automatic Temperature Compensation pH Meter Digital – No longer need to pay attention to the temperature of testing liquid, meter can accurately determine the pH value of the sample in the temperature range of 0 °C-60 °C (32 °F-140 °F), so as to solve the inaccurate problem caused by changing the liquid temperature.
  • Pocket Size pH Tester Kit – You can use this Pocket Size small but powerful Pen Tester, device to measure your aquarium, pool, pond in a garden, bath tub to test the levels of Ph value, It can also be used to measure drinking water, RO System, spa, soap mixtures, food, wine, beer or any other liquids. 

The pH Meter is ultra accurate, reliable and easy to use. You could measure 4 parameters (pH/TDS/EC/Temp) with one meter.With the automatic temperature compensation function, This pH meter could accurately read the pH value of the sample in the temperature range of 32 °F-140 °F.

It can be widely used in all water quality testing situations, water purification applications, aquaculture, hydroponic, pool & spa, colloidal silver, water treatment and so on.


Measuring range: pH:0.00-14.00pH; TDS: 0-19990ppm; EC: 0-19990muS/cm
Resolution: 0.01 pH; 1ppm; 1muS/cm; 0.1℃; 0.1degF
Accuracy: pH: +/-0.01 pH; TDS/EC: +/-2%; Temp: 0.5℃
Batteries: 3 * 1.5V LR44 button cell (not included)
Temp.: 0.1-60.0℃; 32.0-140.0degF
Calibration: pH: three points automatic calibration (6.86 & 4.00 & 9.18pH); TDS: 1413muS/cm; EC: 1413muS/cm
Auto shut off: 5 Minutes

How to make a standard solution?

Completely empty the powder into a clean 250ml glass beaker.

Add 250ml of PH Buffer Powder to the beaker.

Still until the powder has completely dissolved.

PH solution accuracy is ±0.01PH.

Power on→Press the MODEL/CAL button → Adjust to pH mode→Put the electrode into pH4.01 / pH6.86 / pH9.18 standard solution→Press and hold the MODEL/CAL button for several seconds→The value of pH4.01 / pH6.86 / pH9.18 is no longer flashing, and the calibration of pH4.01 / pH6.86 / pH9.18 is completed.

How to use the pH meter?

1. Press the ON/OFF button to turn on the unit, and then press MODE/CAL button adjust the tester to pH mode;
2. Dip the electrode in the target solution, making sure the whole electrode is submerged;
3. Wait a few seconds for the reading to stabilize, and the LCD screen will display both temperature and PH value.
4. Dry the electrode with a cloth after use.

How to Calibrate the PH Meter?

1. Before calibration, add the pH4.00/pH6.86/pH9.18 buffer powder into beaker with 250ml of distilled water, then stir until the powder has completely dissolved.

2. Press the ON/OFF button to turn on the meter; Adjust to PH mode;

3. Put the electrode into pH4.00/pH6.86/pH9.18 standard solution, waiting for the readings to stabilize (usually 5~10 Seconds);

4. Press and hold the MODE/CAL button and release after 6 seconds;

5. Until pH4.00/PH6.86/PH9.18 readings are no longer flashing, finish.

  • Three-Point Calibration – Automatically identify the calibration solutions.
  • ATC function – Solve the inaccurate measuring problem caused by the change of liquid temperature.
  • Lock function – Makes it easy to read and record, the instrument will lock the reading result.

Water Quality Tester Details

Application Scenarios of PH Pen

ph meter 112301

Please note:

1. Clean the electrode with distilled water before and after each use.

2. Do not touch the electrodes with hard tools or fingers. Always put on the protective cap to prevent the electrode from drying out and damaging it.

3. When measuring, the depth of the PH meter probe inserted into the water should not exceed the length of the PH pen cap to prevent damage to the circuit board.

4. When the meter cannot be turned on or the display fades, please open the battery box and replace the battery (pay attention to the polarity), and then recalibrate the meter.

5. When calibrating each package of calibration powder, add distilled water no more than 250ML, too much water will easily cause errors.

6. Store the PH meter in a cool and dry place to prevent damage caused by moisture.



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