PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium

I was surprised at the price but curious as I am used to paying a bunch for blue labs. The fact that it worked great and was accurate makes me wanna buy a few more just to have them Incase I ever need to double check my ph or if a friend needs one.Update: Product started to not read pH correctly and as I looked at the bulb, it was broken. I did not bang it on anything or do anything to it to causes issue but it broke. I’ve had labs in the past and I realize this is a vape brand ph meter But I don’t understand how the bulb would’ve broke. For the first few readings at read perfect. I’m not sure what happened

easy to use and works nice to check PH in my hydroponic system

I’ve had one of these for several years, and it worked fairly well. After about 3 years it became erratic and unreliable, so I bought another one. Calibration doesn’t seem to work; the instructions say to “contact us”, but there is no contact information. This one reads about .15 low across the range of values, so I’ve just made a note of that, and it’s close enough for my purposes.

This is a real piece of #$%@. And if it was cheaply made and functioned properly, then great! Who cares?But the results are all over the place. Imagine having a meat thermometer and you put it in your chicken thigh to see if it was safe and it bounced between 145° and 171° just while holding it still. And then you wiggled the thermometer and it went to 180° before bouncing slowly back to 164°. That's what using this pH meter is like. It inspires zero confidence. I'm not sure I've ever returned a $7 item before, but I'm returning this one.

Value and work great for each grow then disgrace re calibration does not work.

Though straightforward and simple to use, this pH meter just behaves erratically in my hands.I'm a lab scientist, and I've used multi-hundred dollar meters many times. I don't expect this to be that. But I do expect it to give -roughly- the same measurement each time I use it, and to behave predictably.Even after it's been calibrated with the included standard buffers, this thing's reading drifts like crazy. I'm using it to pH-adjust nutrient solution to water my houseplants, and it takes a long time to stabilize once you put it into the solution. Even when (if?) the pH value settles on a single reading, the values don't always align with other readouts (3-pad pH dipsticks and General Hydroponics 5.5 - 8 pH solution).This meter does broadly correlate with approximate pH. It's not a nothing-meter. Maybe it would be more stable in strongly buffered solutions, or useful for science demos comparing strongly acidic or alkaline substances. But for my needs, it's too noisy and unreliable to trust my plants' health to.

WORKS GREAT FOR THE MONEY

Worked great for making homemade apple cider or fruit vinegar. Will be using this all the time instead of test strips.