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Estimated between Oct 11, 2026 and Oct 13, 2026 Ships within 1-3 business day after payment clears. | SHOP Track Order | Ourlum Orders | Track Orders
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Rapid zero-calibration readings give you instant purity results.
A bright backlit screen lets you check accuracy anywhere.
Data hold mode locks your reading so you never lose a measurement.
This digital TDS meter cuts through guesswork whenever you test drinking water, aquariums, or home filters.
You simply dip the probe into your liquid and read the precise parts per million on the sharp red display.
The built-in warning flashes when TDS climbs past fifty, so you catch contamination before it causes damage.
You get a reliable handheld tester built for fast, clear liquid analysis.
NJTY engineered this device specifically for homeowners, hobbyists, and safety-conscious buyers who need dependable readings.
Spot unsafe mineral levels and adjust your filtration system with confidence.
Track seasonal changes in your pool or tank without buying fresh test strips.
Save time and money by fixing dirty water issues right away.
Display Type: Digital LCD
Measuring Range: 0–9,990 PPM
Safety Alert: Automatic red screen activation above 50 PPM
Brand: NJTY
Smart Functionality: Non-smart standalone unit
Remove the protective cap and wipe the probe gently.
Submerge the tip in your sample and press the button to wake the display.
Wait a few seconds for the numbers to stabilize, then lock the result with the data hold switch.
Join nine verified buyers who trust this tool for consistent, accurate checks.
Build daily water habits that protect your family and prolong appliance life.
Test reverse osmosis systems, coffee brewers, and greenhouse irrigation lines.
Monitor saltwater tanks and freshwater aquarium filters daily.
Verify bottled water sources and garden well output quickly.
Homesteaders testing well water gain clarity on hidden mineral buildup.
Aquarium sellers prove crystal clear results after every conditioner swap.
Kitchen technicians spot hard water threats before they stain fixtures.
Does this require manual calibration? No. The device uses zero-calibration technology, so you start measuring immediately.
Can I use it inside a fish tank? Yes. The slim probe slides easily under filter grates for spotless readings.
Shop OurLum with confidence—secure payments, fast shipping, easy returns, order tracking, and reliable support.
At OurLum.com, we don’t just promise quality—we guarantee it. Every product is carefully selected and tested to meet real-life needs, and your satisfaction is 100% backed by our no-hassle return policy. If it doesn’t work for you, we’ll make it right—fast. Shop confidently knowing you're getting trusted products, secure checkout, and real support when you need it. Because at OurLum, your peace of mind comes first
Good product
TDS Measuring Meter Digital Water Quality Tester 0-9990PPM TDS Backlit LCD Water Purity PPM Aquarium Filter Data Hold Red Warn
Ok
arrived safely
arrived well and quickly
Great item
Great, we need to check how the water we drink is.
A product worth recommending. Fast delivery. I also recommend the seller, I am very satisfied with the purchase.
Random calculation...
My aquariums are at 250.
Tap water 300.
Bottled water above 350.
An object that is of no use to me.
I'm going to start drinking fish water in that case...
Good item,cheap but funtional
