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Digital PH Meter + TDS Tester for drinking water tds meter tds tester ph meter digital PH pocket pen TDS-3 water tester

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Sale Price: US $13.14
45 days Money back
45 days Money back Returns accepted if product not as described, buyer pays return shipping; or keep the product & agree refund with seller.
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On-time Delivery
Guarantees: On-time Delivery 60 days


Digital PH Meter + TDS Meter Ph for drinking water tds meter tds tester ph meter digital PH pocket pen TDS-3 water tester

  • 1 x PH meter
  • 1 x Calibration Screwdrive
  • 1 x PH meter English Manua
  • 1 x TDS Meter
  • 1 x TDS Meter English Manual
  • 1 x Bag for TDS Meter

This digital pen style pH meter is an ideal instrument for whatever you may need to test the pH levels. Excellent PH meter, very accurate and durable

  1. Measuring pH Range: 0.0 – 14.0 PH. Resolution: 0.1 PH
  2. Accuracy: ±in 0.1 pH
  3. Typical EMC DEV: ± 0.2 PH
  4. Batteries: 3 x 1.5V (AG-13 Button Battery)
  5. Trimming: By Potentiometer
  6. Meter comes with calibration screwdriver
  7. Measures total dissolved solids (TDS) and temperature
  8. Measurement Range: 0-9990 ppm,
  9. Accuracy: 2%
  10. Digital Calibration (push button): Factory Calibrated

Shuts off automatically after 10 minutes of non-use

Automatic temperature compensation function: it can automatically change the displayed value into the value of 25 Degrees

High accuracy: Use the Titanium alloy probe which can avoid magnetic disturbance to test water and only has the error (± 0.1)

LCD display screen: Big LCD display screen which has great waterproof performance and let you easily read the displayed value

Fast measuring: can measure once in five seconds

  1. Size: 14.2 x 2.7x 1.5 cm (pH Tester)
  2. Size: 14.5 x 2.6 x 2.0 cm (TDS)
  3. Package weight: 6.90z/197g
  4. Accuracy: ± 0.1PH
  5. Battery: 4 x 1.5V (AG – 13 button battery
  6. The using life of battery: 700 hour
  7. Power source: 2 x 1.5 V (button cell)
  8. Zero: Adjust by the compensate potentiometer

How to use it:

PH meter calibration

  1. Under the condition that the temperature is lower than 25 Degrees, submerge the PH meter’s electrode into the mixed phosphate standard buffered solution (PH is 6.86 and slightly shake the electrode
  2. Use the small screwdriver to adjust and revise potentiometer until the displayed value accord with the PH value of the standard buffered solutio
  3. Submerge the PH meter’s electrode into the Potassium hydrogen phthalate (PH4.0) or the borax standard buffered solution (PH9.18)
  4. After one minutes, the error between the displayed value and the PH value of the standard buffered solution belongs to the allowed range.


Under the following situations, the PH meter must be calibrated again

The PH meter had been used or placed for a long time after calibrated

The electrode is used frequently

The requirement of testing accuracy is higher.

Operating steps:

Take down the protective jacket of PH meter

  1. Use distilled water to clean up the electrode of PH meter, and then use filter paper to soaks up the water of electrode
  2. Switch on the switch which on the battery compartment
  3. Insert the PH meter into solution until the liquid submerge the “immersion lineâ€
  4. Slightly stir resolution for about two minutes and you can read the displayed value
  5. After use, clean up the electrode, turn off switch and put on the protective jacket of PH meter

The introduction of TDS-3 Tester:

  1. Take down the protective jacket
  2. Insert the TDS-3 Tester into solution until that the liquid submerges the “immersion lineâ€
  3. Slightly stir the liquid to eliminate the bubble in the TDS-3 Tester and Wait for 10 seconds until the displayed value is stable, and then press the HOLD button and take out the Tester to read the displayed value
  4. After use, spin-dry the liquid in the tester and put on the protective jacket

Test the Temperature

  1. You can use the temperature test function in the liquid or air at any time when you open the tester
  2. Press the EEMP button, the display screen will change into Temperature Display
  3. Continuously press the TEMP button, the tester will change into TDS mode
  4. Note: You had better not submerge the TDS-3 tester into water; the TDS-3 tester should be protected from direct sunlight, heavy load and fall. And it can test the
  5. 80 Degrees hot-water


The value of TDS can show the content of impurities. The bigger of the value means that the content of impurities is larger; conversely, the content of impurities is small.

The factors that affect the test value of TDS: the temperature of water (the TDS-3 tester cannot test the water with high temperature such as, boiled water). The flow velocity of water (the TDS-3 tester cannot be applied to test the flowing water)

If the tester displays a flashing “x10″icon, multiply the reading by 10

We accept Aliexpress Escrow as our payment method.

If you have any other questions, please contact us directly.

We will send out the package in 1-2 Business Days for your orders. Items usually will be shipped by China post airmail or HK post And Singapore Post .

Note: We only send to the address in the order. Buyer will be responsible for any taxes, customs and any other charges generated in the buyer’s country!

We provide ONE-YEAR Warranty for all the products listed.If you receive a defectve one, it can be returned within 10 days after you signed up the package. Please be noticed that the returned item must be in its original conditions and buyer should bare the return shipping fee.

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If you are not happy with our products and services, please contact us before you submit a negative feedback. Once there is a problem reported, all of our staffs will try best to help you out of the issue occurred. Thank you for your understanding.

Working Time
8:30 –12:00 AM, 14:00 –18:00 PM, Monday to Friday
9:30 –12:00 AM Saturday

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Shipping Company Shipping Cost Estimated Delivery Time
DHL 3 - 7 days
UPS Expedited 3 - 7 days
EMS 5 - 14 days
Post Air Mail Free Shipping 15 - 45 days
Return Policy If the product you receive is not as described or low quality, the seller promises that you may return it before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe) and receive a full refund. The return shipping fee will be paid by you. Or, you can choose to keep the product and agree the refund amount directly with the seller.

N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion.
Seller Service On-time DeliveryIf you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe).

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Price:  US $13.14 / piece