VIVOSUN Digital pH and TDS Meter Kits, 0.01pH High Accuracy Pen Type pH Meter ± 2% Readout Accuracy 3-in-1 TDS EC Temperature Meter for Hydroponics, Pool and Aquarium, Yellow Blue, UL Certified
Original price was: $18.99.$15.99Current price is: $15.99.
Price: $18.99 - $15.99
(as of Mar 24, 2025 18:33:54 UTC – Details)
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Vivosun is the global leader in at-home growing technology & equipment. With over 10 years of demonstrated excellence in the development and production of growing tools, we have established ourselves as a trusted partner for every step in the growing process and for every level of grower.
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Vivosun’s smart grow system enables growers to master the elements for optimal lighting and ventilation to achieve ideal grow results.
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How did we get our start?
Founded in California, Vivosun is a leading manufacturer of indoor horticultural equipment.
What makes our products unique?
We will help you manage your plants with scientific precision and control all aspects of your grow with high-quality technology and tools including durable growing enclosures;Whether you grow indoors or out, we provide everything you need to grow the highest quality plants in the shortest amount of time.
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Our mission is to empower growers at all levels and of all types to grow the best of what they love.
Is Discontinued By Manufacturer : No
Package Dimensions : 6.93 x 3.94 x 1.26 inches; 3.53 ounces
Item model number : 4336465266
Date First Available : March 14, 2017
Manufacturer : VIVOSUN
ASIN : B06XKMH86J
Country of Origin : China
Application: Great for all home and laboratory TDS & pH testing applications including aquariums, swimming pools
PH Meter: Full measurement range of pH 0 – 14, reliable and quick readings
3-in-1 TDS Meter: Measurement Range 0-9990ppm, 0-9990µs/cm; Accuracy ± 2%, 0.1- 80.0°C, 32.0-176.0°F; Note: This meter can’t test sea water
Features: Comes with protective case; Lightweight, handheld design for portability and convenience
Included: PH meter, 3-in-1 TDS meter, 3 calibration buffers
13 reviews for VIVOSUN Digital pH and TDS Meter Kits, 0.01pH High Accuracy Pen Type pH Meter ± 2% Readout Accuracy 3-in-1 TDS EC Temperature Meter for Hydroponics, Pool and Aquarium, Yellow Blue, UL Certified
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Original price was: $18.99.$15.99Current price is: $15.99.
Drew –
On point so far
Currently a few weeks after calibration, unit still measures ph and ec beautifuly
Michael Biehl –
Worth it
Didn’t know what I was getting when I was buying since they’re so cheap. But they do really well. Keeps my ph perfect. Pretty quick results. Durable
troyboy –
Backlight helps
Works fine, you can reset calibrate it as carefully as you want. Slow read.
A Aycock –
Easy to use
The VIVOSUN Digital pH and TDS Meter Kit is a must-have for anyone managing hydroponics, aquariums, or pools. Both meters are lightweight, easy to use, and provide accurate readings for pH, TDS, EC, and temperature. The 0.01 pH accuracy ensures precise water quality measurements, and calibration is straightforward. I found them fast and reliable, making water testing effortless. A great value for maintaining optimal water conditions with confidence!
ndcisiv –
Horrific accuracy
So I bought this set wanting to try out actually tracking and adjusting my pH and EC of my nutrients for my little indoor hydro-farm. Like most people, I didn’t want to spend a lot on my little hobby so I figured I would give this product a try as I actually enjoyed some other Vivosun products.I’ll start with the TDS/EC Meter. It is actually decent and appears to be pretty accurate right out of the box. I’ve used it for a little while and it remains to be acceptably accurate so far without any issues. Good to go, this one I’m pretty happy with and will continue to use at least for now.Next I’m moving on to the problem child, the pH Meter. Wow. Where do I begin. I started off trying to figure out how to calibrate this little thing as the instructions drastically varied from all the calibration videos available online for it. Maybe they changed the method but once I figured out how it wanted to be calibrated I went through the steps and all was good. I tested it a number of times using various testing liquids and it was pretty spot on (at least within acceptable limits for my hobby, not anything that needs to be precise though). So I mixed up some of my nutrient solution, cleaned the pH and TDS meters as advised to in the manual and put them away safely. Fast forward 1 week, I pull out the pH meter and dip it into a cup of distilled water and it tells me that it has a pH of 10.3! Far from the value of 7 I was expecting to see. So I pulled out my other pH balanced liquids to test and every one of them was extremely off from what it should be. It completely lost ALL calibration after one use, and one week of storage. I’m sorry but that means I need to calibrate this thing every time I turn it on? And they only supply you with one set of calibration powder that isn’t to be re-used? Absolute and complete garbage. The calibration costs for a year would be well into the hundreds a year for a $10 meter! Absurd. This is a product you should definitely skip buying. Buy yourself a 14-sided dice and give it a roll, it will give you a more accurate guess on your pH level than this thing every will. I would return it, but I was not thinking and threw away the packaging already.
MrDiY614 –
They work for what I use them for. Not too sure of accuracy
I use these for checking the ph and ec of my plant nutrients. They seem to work ok but it’s definitely not a high quality meter. They are a cost friendly meter that does work but does not compare to say like a bluelab meter or a thermopro meter but it does work. Does just like it is supposed to but very basic and seems cheaply made but if your careful with it I would say it would last awhile. I always check 2 or 3 times and give it plenty of time to actually pick up the most accurate reading I can get from it. Easy to use and easy to read but a little slow at leveling out and giving you the end results. I would buy again if I needed it and couldn’t afford 100 bucks for a bluelab meter. Better then not checking at all so even if it’s not 100 percent accurate it’s got to be closer then not checking at all.
MoncrieffFamily –
Works Great!
Works perfectly, helped me fix a ph imbalance in my indoor garden. Also great for testing your drinking water or when setting up an RO filter system.
Aaron –
Accurate
Great value for the money, I have owned a few of these and this one is definitely accurate and built well. It comes with a TDS meter as well, this is less important for me but it is nice to have. I like the size and the fact that it adjusts for the water temperature. It has a nice backlight that works great, just don’t dip this thing too far into the water. Super easy to use though. The calibration at first takes a little bit of time but once you get through that, using it as a breeze. Setup should only take about 5 minutes, make sure you have distilled water when you start though.
Stéphane –
TDS meter are working fine but for the PH meter I personally donât arrive to fully calibrate it as all the time I do the PH 7 then PH 4 and when itâs arrive to do PH 9 itâs return to PH 7 so impossible to complete the calibration.
Sabrina –
Ich hab den PH-Tester bisher nicht benutzt, kann also nix dazu sagen, ob er funktioniert oder nicht.Den zweiten Tester nutze ich fleiÃig um die Qualität meines Wassers zu prüfen. Ob die Werte nun 100%ig genau sind oder nicht, kann ich nicht prüfen. Mir reicht es für meine Zwecke zu wissen in welchen Bereich ich mich befinde. Ich brauche keine absolut genauen Werte.Ich für meinen Teil bin zufrieden und bin gespannt wie lange die zwei Tester funktionieren.
Hasan –
its as expected
ClearMindCasting –
My only complaint is the quality of the housing feels and looks cheap, but they function great. Come with a pair of batteries for each so there is an extra. Each unit uses different types of batteries with is odd and inconvenient but is what it is.PH unit needs to be calibrated out of the box which takes some time, but it isnât hard and everything thatâs needed to do so is included.
Johar Ak –
Excellent