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Digital PH Meter + TDS Tester for Aquarium, Fishing Industry, Swimming Pools, School Laboratories, Food & Beverage 0-9999 PPM

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Price: US $14.88 Sale Price: US $14.14
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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  • This digital pen style PH meter is an ideal instrument for any aquarium, the fishing industry, swimming pools, school laboratories, food & beverage, etc. And, this Digital TDS Water Quality Tester is ideal for all basic water testing applications. This product is highly efficient and accurate due to its advanced microprocessor technology. Hold Function: stores measurements for convenient reading and recording. Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries. Measurement Ranges is between 0-9990 ppm, and from 0-999 ppm, the resolution is in increments of 1ppm; from 1000 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a blinking ‘x10’ image.
  • Applied range: the production and drinking of purified water, Electroplating liquid, Boiler water, Water in fish tank, Water of swimming pools, Photograph flushing fluid, Well water, Deep phreatic water, Laboratory, Aquaculture, Food processing, etc.


  • 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
  • Measuring pH Range: 0.0 – 14.0 PH. Resolution: 0.1 PH
  • Accuracy: ±in 0.1 pH
  • Typical EMC DEV: ± 0.2 PH
  • Batteries: 3 x 1.5V (AG-13 Button Battery)
  • Trimming: By Potentiometer
  • Meter comes with calibration screwdriver
  • Measures total dissolved solids (TDS) and temperature
  • Measurement Range: 0-9990 ppm,
  • Accuracy: 2%
  • 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


  • Size: 14.2 x 2.7x 1.5 cm (pH Tester)
  • Size: 14.5 x 2.6 x 2.0 cm (TDS)
  • Package weight: 6.90z/197g
  • Accuracy: ± 0.1PH
  • Battery: 4 x 1.5V (AG – 13 button battery
  • The using life of battery: 700 hour
  • Power source: 2 x 1.5 V (button cell)
  • 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 solution

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:

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

The introduction of TDS-3 Tester:

  • It is used for water test
  • Take down the protective jacket
  • Insert the TDS-3 Tester into solution until that the liquid submerges the “immersion lineâ€
  • Slightly stir the liquid to eliminate the bubble in the TDS-3 Tester
  • 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
  • After use, spin-dry the liquid in the tester and put on the protective jacket
  • Test the Temperature
  • You can use the temperature test function in the liquid or air at any time when you open the tester
  • Press the EEMP button, the display screen will change into Temperature Display
  • Continuously press the TEMP button, the tester will change into TDS mode
  • 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
  • 80 Degrees hot-water


  1. 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.
  2. 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)
  3. If the tester displays a flashing “X10†icon, multiply the reading by 10

What is included:

1 x PH meter

1 x Calibration Screwdriver

2 x pH Buffer Powder

1 x PH meter English Manual

1 x Case

1 x TDS Meter

1 x TDS Meter English Manual

1 x Bag for TDS Meter

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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 $14.88 / piece
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