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, Black White, UL Certified

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.

Product looks really nice. I only use it maybe twice but the quality looks good! Much better than the pH strips.

I’ve had a lot of defective ones this was the first that actually did what needed

Let me start by saying I love VIVOSUN products. I feel they offer the best value for quality of any company I have seen. That being said I was extremely disappointed with the quality and functionality of the ph meter. The meter constantly jumps around and takes a considerable time to show a reading. I have calibrated several times over the couple months and never saw an improvement. My plants started showing significant signs of what I thought was a deficiency but after getting a new meter I saw my VIVOSUN meter was significantly off causing nutrient lockout. What I suggest is don’t skimp on your meter. It could possibly be the one I had but the quality is obviously cheap which at its price is to be expected but why risk spending all the money on nutrients if your plants can’t absorb them? A high quality meter does cost about 5X the cost but I feel it is a no brainer. The TDS meter is fine but I will probably upgrade that as well just for piece of mind. I am not bashing VIVOSUN as a company. Every other product I have left 5 stars which is the only reason I took a chance on a budget meter. Being the TDS meter works this should be a 3 star but honestly who ever reads the 3 star reviews? Plus I am a bit frustrated finding the reason for my malnourished plants 🥺

Easy to use and accurate so far

Muy buenos .. los estamos usando para lo que los compre.. y todo bien..

A good product, I did have to calibrate the ph meter but, they do include the nessessary items to do so. All and all would buy again.

Bright display works great

Einwandfrei top Danke

Really useful, I think the price is spot on and they have helped remove some of the guess work when it comes to pH and ppm

El envío tardo más de lo esperado ( aprox una semana más) y además el medidor de ph viene como usado, tiene sales en los pines como si ya se hubiera ocupado antes. Además de que el material y el feeling de los medidores se siente como un producto chino, al que solo le reetiquetaeon con los logos de vivosun

Well made testers for less then the expensive types. As long as you recalibrate the ph tester and keep both testers clean (using clean water) they will last you. Definitely recommend on a budget.

I had a cheap ph reader that wasn't reliable. With these vivosun ph and TDS meters my garden is blooming! So far these have been very reliable.