No, it test for TDS in PPM (parts per million). The reading is taken from the EC reading and converted within the unit to TDS. This is the accumulation of all dissolved solids in your water. But what conversion factor is used by this company? A 5.0 conversion will have different reading than one with a 7.1 conversion factor. Makes a difference. Learning to read EC is best option along with a tester that reads EC and PPM. No calibration on some. To test your pH you can use the paper strips, General Hydroponics sells a pH Test Kit that includes testing solution along with pH Up and pH down for adjusting your pH to your requirements if you are into gardening. Very fast and easy to use. There are a number of pH test pens on the market. Most need calibration and calibration solutions that is a consumable. There are different calibration factors on these as well. But easier to use and more accurate once you learn it.

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Lxuemlu TDS Meter Digital Water Tester, Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More

Lxuemlu TDS Meter Digital Water Tester, Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More

Q: What is the accuracy of this tester?

Can’t say for sure. Howerver, the first time I used it, the number I was getting from an old RO membrane were 350ish. I thought for sure the meter was in error. I then opened a bottle of filtered water and tested that. The bottled water reading was 12 so I think the meter is very accurate. I have since replaced the RO membrane and my numbers are in the high 20s to low 30s. I hope this helps. I would highly recommend this tester - it’s a great buy.

Q: Is there a minimum amount of water that can be tested?

I just put some water in a cup and put end of TDS gauge in, no more than inch. By the way, the best water will test 0. I use a zero water pitcher. I use this to check if new filter is needed. I hope this helped you.

Q: At what reading should the filter/cartridge be changed?

Your filter and cartridge should be change every 30 days , if your ppm reading over 300 you may need do some water change , also test for nitrite , nitrate and ammonia . under 300 ppm you are OK , should be around 150 ppm to 250 ppm , but not over 400 ppm . usually do 10% water change every month or twice a month depend on how many fishes or shrimps you have. Hope will help.

Product ID: 297496932

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💧0-9999 ppm ultra-wide TDS range

🌡️3-in-1: TDS, Temperature & EC meter

🛡️Protective carrying case with belt clip

Frequently Bought Together

TDS Meter Digital Water Tester, Lxuemlu Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More

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Description

💧 Stay ahead of the purity curve—because your water deserves a pro’s touch!

PORTABLE RUGGED - Compact, lightweight design with a durable carrying case and belt clip—perfect for on-the-go professionals.
INSTANT PURITY CHECK - One-button water purity reading in ppm—know your water quality in seconds.
SMART AUTO OFF HOLD - Saves battery life with auto-shutdown and lets you freeze readings for easy recording.
PRECISION ACROSS RANGE - High resolution from 0-999 ppm (1 ppm increments) and extended range up to 9999 ppm (10 ppm increments).
TRIPLE MEASUREMENT POWER - Simultaneously measures TDS, temperature, and electrical conductivity for comprehensive water analysis.

The Lxuemlu TDS Meter is a professional-grade 3-in-1 digital tester that measures total dissolved solids, temperature, and electrical conductivity in water. With a broad detection range up to 9999 ppm, instant readings, and a rugged carrying case, it’s ideal for drinking water, aquariums, and field testing. Its smart auto-off and hold functions ensure convenience and battery efficiency, making it a must-have tool for health-conscious and quality-driven professionals.

Specifications

Manufacturer	Lxuemlu
Part number	6.65059E+11
Item Weight	59 g
Product Dimensions	16 x 2.79 x 1.52 cm; 59 g
Batteries	1 Lithium Metal batteries required. (included)
Item model number	6.65059E+11
Color	White
Item Package Quantity	1
Display Style	LCD
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Lithium Manganese Dioxide

Have a Question? See What Others Asked

What is the accuracy of this tester?

Is there a minimum amount of water that can be tested?

does it test ph?

At what reading should the filter/cartridge be changed?

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