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Digital Water Tester

Digital Water Tester

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Expose Your Dirty Tap Water

Find out by simply putting our tester into your water and eliminate drinking dangerous chemicals

You Can Now Trust Every Glass You Pour

Every glass is a guess. Dip Hydrex in, see exactly what is in your water, and hand your family a glass you actually trust.

Drinking Clean Water 🆚 Tap Water

Drink knowing exactly what's in your glass

Drink with no clue what's in it

Protect your family from what hides in tap water

Risk the buildup that slips through unchecked

Notice the instant your water quality changes

Never spot it when something shifts

Stay in full control of what you drink daily

Leave it to chance, glass after glass

Clean water is tested, not just filtered

Assume filtered means clean and hope

How Hydrex Reads Your Water

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Precision Sensor

A titanium probe reads the dissolved solids in your water the instant you dip it, picking up what your eyes and taste never could.

<p>How Hydrex Reads Your Water</p>

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Instant Digital Readout

The clear backlit screen turns that reading into one simple number in about three seconds, so you know exactly where your water stands.

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Lock And Compare

Hold the result on screen to compare your tap, your filter, and your bottled water side by side, and see which one you can actually trust.

Real Results From Our Customers

Excellent

4.7

/ 5

based on 1000+ reviews

I Finally Stopped Worrying About Our Tap

I have two little ones and I always wondered what was really in our water. The first time I dipped this in our tap and then our filter pitcher, the difference on the screen said everything. Now I check it every week and I actually feel calm handing my kids a glass. I have two little ones and I always wondered what was really in our water. The first time I dipped this in our tap and then our filter pitcher, the difference on the screen said everything. Now I check it... I have two little ones and I always wondered what was really in our water. The first time I dipped this in our tap and then our filter pitcher, the difference on the screen said everything. Now I check it every week and I actually feel calm handing my kids a glass.

Jessica M.

My Filter Was Dead And I Had No Idea

I thought my under-sink filter was fine because the light had not changed. I tested it on a whim and the number was almost the same as straight tap. That filter had quit weeks ago. This thing paid for itself the first day. I thought my under-sink filter was fine because the light had not changed. I tested it on a whim and the number was almost the same as straight tap. That filter had quit weeks ago. This thing paid for itself... I thought my under-sink filter was fine because the light had not changed. I tested it on a whim and the number was almost the same as straight tap. That filter had quit weeks ago. This thing paid for itself the first day.

Daniel R.

A Must For Anyone With A Reef Tank

I keep a 75 gallon reef and stable water is everything. This reads fast and matches my expensive meter closely enough that I trust it for daily checks. No more guessing why my params drift. Easy to use and the screen is clear. I keep a 75 gallon reef and stable water is everything. This reads fast and matches my expensive meter closely enough that I trust it for daily checks. No more guessing why my params drift. Easy to use and the... I keep a 75 gallon reef and stable water is everything. This reads fast and matches my expensive meter closely enough that I trust it for daily checks. No more guessing why my params drift. Easy to use and the screen is clear.

Marcus T.

Great Little Tool, Wish It Floated

Does exactly what I need for my hydro setup. I check my nutrient water every day now and dialing things in got so much easier. Only reason for four stars is I almost dropped it in the reservoir and it does not float, so be careful. Otherwise no complaints. Does exactly what I need for my hydro setup. I check my nutrient water every day now and dialing things in got so much easier. Only reason for four stars is I almost dropped it in the reservoir and it... Does exactly what I need for my hydro setup. I check my nutrient water every day now and dialing things in got so much easier. Only reason for four stars is I almost dropped it in the reservoir and it does not float, so be careful. Otherwise no complaints.

Kevin P.

Everything You Need To Know

We dispatch orders within 24 hours, and delivery typically takes 4-8 business days, depending on your location

Cheap pens drift out of calibration fast and leave you trusting a number that is already wrong. Hydrex ships factory calibrated and reads four things at once, so you get an accurate, complete picture every time instead of a guess.

None at all. Take Hydrex out of the box, pull the cap, dip it in your water, and read the screen. You will have your first result within seconds of opening the package.

Tap, filtered, well, bottled, aquarium, hydroponic, pool, and more. If it is water you care about, Hydrex will read it, which makes it easy to compare sources side by side.

Hydrex shows you the level of dissolved solids in your water, which is the fastest way to spot a failing filter or a sudden change in quality. It is a powerful early warning and comparison tool, not a lab test for specific contaminants like bacteria or lead.

Hydrex is factory calibrated for reliable readings out of the box, and it can be recalibrated whenever you want to keep it precise. You get consistent results you can actually trust, test after test.

If you are not happy, we make returns easy with a money back guarantee. Return your order within 90 days of receiving it, as long as the product is in its original, unused condition with all packaging intact.