PmoYoKo

pH Meter 3-in-1 TDS Meter Digital Water Tester with 0 01 High Precision Water Tester for Drinking Water

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$20.59$31.99

About this item

  • 【3-in-1 pH Meter】PmoYoKo 3-in-1 pH meter delivers high-precision simultaneous pH, TDS, and temperature readings. This TDS tester offers full water quality analysis for safe use, replacing 3 single-function tools to simplify testing for pools, gardening, and daily use—no device switching needed
  • 【High Accuracy pH Meter for Water】TDS meter digital water tester features 0.01 high-resolution chip & premium electrode for fast, accurate readings. Lab-trusted for cosmetics, fermentation, aquariums, R&D, brewing & tank water testing. Lab-grade reliable results, no guesswork—ideal for complex setups
  • 【Friendly Backlight】Water tester for drinking water with auto-activated bright backlight. Effortless pH/TDS/temp testing & hydroponic monitoring—no squinting or repeated presses. Smart power keeps backlight on for hours, perfect for nighttime/low-light grow tents/hydro/aeroponic growers
  • 【Pocket Size pH Meter for Water】This tiny and handheld TDS meter fits in your pocket so you can carry everywhere for testing aquarium, pool, garden, bath, spa, and even drinking water/liquid mixes , wine, soap, beer. Perfect for on - the - go pH checks
  • 【pH Meter to Improve Water Quality】3-in-1 pH/TDS/temp meter for accurate water quality testing. Perfect pH & TDS for daily drinking water. Essential for aquariums—prevents gill irritation, regulates hardness, eases fish stress, tds water tester fits tank setup/changes/disease prevention. Tidy up fish tools & improve fish survival
  • 【ATC Digital pH Meter】No need to monitor sample temperature—this water tester for drinking water delivers accurate pH readings across 32°F–140°F (0°C–60°C), eliminating inaccuracies caused by temperature fluctuations
  • 【How to calibrate the pH Meter/TDS Meter?】 1. Add pH4.00/pH6.86/pH9.18 buffer powder to water and stir thoroughly 2. Press the ON/OFF button to switch to pH mode, submerge the electrode into the standard solution and wait 5–10 seconds 3. Press and hold the MODE/CAL button for 6 seconds then release; wait for 3 flashes until readings stabilize, calibration is complete
  • 【Tips】 For better using experience, we recommend to soak the tds meter digital water tester in clear water for 5 minutes before starting calibration after receive the product. Because it may cause inaccurate readings if customer immediate use for the first time
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Product details

ColorGrey
BrandPmoYoKo
Product Dimensions1.5"W x 7.2"H
Item Weight0.17 Kilograms
Battery DescriptionAlkaline

Technical specifications

colorGrey
brandPmoYoKo
product_dimensions1.5"W x 7.2"H
item_weight5.9 ounces
battery_descriptionAlkaline
mounting_typeTabletop
upper_temperature_rating140 Degrees Fahrenheit
voltage1.5 Volts
temperature_accuracy0.5
temperature_reading_accuracyplus_minus_0_point_5_degrees_celsius
manufacturerPmoYoKo
upc692041265243 692041265113 721678690132 692041265106
global_trade_identification_number00721678690132
item_model_numberEZ-9901
is_discontinued_by_manufacturerNo
date_first_availableDecember 1, 2020
best_sellers_rank#5,428 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Lab pH Meters

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Customer reviews

4.02,218 ratings

Customers say

Customers find the pH meter gives accurate readings and works perfectly out of the box, with a clear digital display that's easy to use and read.

★★★★★

Great Little pH Meter!

McGrvyJune 16, 2025✓ Verified purchase

For anyone with hobbies that depend on the pH of something, this little digital pH pen is a fantastic tool to have in your toolbox. It takes all the guesswork out of the process. I use it to keep the water in our fish tank just right, and it’s super easy to use. One thing I really like is that it also measures the temperature at the same time as the pH, ensuring my heater/thermometer is working as expected. It comes with calibration powders so that you know your readings are really accurate. This meter is exactly what I was looking for: simple, effective, and I highly recommend. Read more

Review image 1
★★★★★

The Perfect Tool for Monitoring Water Quality in Las Vegas!

Mingmin HuangMarch 12, 2024✓ Verified purchase

I recently decided to take control of the water quality in my Las Vegas home by installing a water softener system. Living in an area where water hardness can be a significant concern, it was crucial for me to find an accurate and reliable way to monitor the pH levels of my water, ensuring it remained within a healthy range for both drinking and household use. After much research, I stumbled upon this water pH tester, and it has been an absolute game-changer for me. The accuracy of this pH tester is impeccable, giving me peace of mind that I’m maintaining the perfect balance in my water. The ease of use is another standout feature; it’s as simple as dipping the tester in the water and reading the result. No complicated procedures or calibration issues that I’ve encountered with other testers in the past. Its durability and build quality are impressive. Living in a desert climate like Las Vegas, where the conditions can be harsh, it’s essential to have a robust tool that can withstand a bit of wear and tear. This tester has lived up to that need splendidly. One of the aspects I appreciate most is the immediate feedback it provides. This allows me to make any necessary adjustments to my water softener system in real time, ensuring that my water quality is always at its best. Whether it’s for the health of my family or the longevity of my household appliances, this pH tester has provided an invaluable service. I highly recommend this water pH tester to anyone looking to take control of their water quality, especially for those living in areas prone to hard water. It’s an essential tool for anyone with a water softener system, or simply for anyone who cares about the quality of the water in their home. Five stars all the way! Read more

★☆☆☆☆

It works great, until it doesn't

MPOctober 14, 2024✓ Verified purchase

This review is going to be a bit daunting. Out the gate when you first receive these meters they tend to get the job done. Reads the pH well, gives accurate PPMs, etc. All is well up until the first battery swap That's when things get bad. You can no longer calibrate the meter with the pH solution provided, which makes the product utterly useless. I bought another one of these and within first use out the box, the diode completely shattered on me when simply trying to clean it off with a wet paper towel I've purchased about 4-5 of these and I'm pretty much convinced at this point that they're not reliable after some wear and tear. I have an older Vivosun meter that's been sitting dormant in its packaging for well up to a year now, and is still more calibrated than this meter is after a week of solid usage. It's time to move on. There are much better, longer lasting options than this meter :-( Read more

★★★★★

Accurate and Easy to Use

LindaJune 4, 2025✓ Verified purchase

This digital pH meter is incredibly useful and accurate! I’ve used it for testing water in my aquarium, pool, and even household drinking water, and it delivers fast, consistent readings every time. The 0.01 accuracy really gives peace of mind, and the LCD display is clear and easy to read. It also comes with 3 calibration powders, which makes setup simple even if you’re not super technical. This product contributes to the environment and really good quality. Plus, the compact, pocket-size design is a bonus for easy storage and portability. I definitely recommend this to everyone who needs reliable pH testing at home! Read more

★★★★☆

It seems pretty accurate

Rolando AlvarezApril 27, 2024✓ Verified purchase

Used this to test our new ro system. Numbers seem accurate from test strips and prove the ro does reduce tds as well as reminerilizer adding a bit back in. The odd part is that the ph stayed pretty much the same witha nd without ro filtration. Easy to use, fast reading, and seems to be of decent quality for its price. The display is easy to read and resists water as long as you do not submerse past reading area. Read more

★★★★★

Works perfect for well water and hot tub!

Mike S.June 16, 2025✓ Verified purchase

Purchased this PH meter to see how it would work with my well water but more importantly the hot tub water to determine how it works for adding Ph increase or decrease chemical to it to keep it its in best neutral state. It worked very well and compared almost exactly as the litmus paper that comes with the hot tub. It also helps me feel comfortable about our drinking water. Also the test powder to verify the device also was easy to use. Would recommend this device. Read more

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