PH Meter for Water Hydroponics, Pen Digital PH Tester 0.01 PH High Accuracy with 3 Standard PH Buffer Powders for Aquarium, Soil, Household Drinking and Pool

I took out the instructions, calibrated as instructed, and use as instructed. No complaints.I don't know how accurate it is, and don't know how to guess. Tap water seems a bit alkalotic, the meter shows in the 8 range, but I can't say if it is right or wrong.My plants are supposed to be kept in the 6 ish range, and according to this, we stay between 6.25 and 6.8, and the things are flourishing as far as I can tell.I got it because our tap water was extremely acidic one day and I poured it in my hydroponic garden and killed everything within a day. Tomatoes and beans along with some greens had to be dumped and restarted, beans and tomatoes were in bloom, so quite irritating. No matter how "accurate" this is, that should be avoided using the meter, so all good.

I followed the calibration instructions exactly including the distilled water. The display keeps jumping from 5.0 to 9.0 range. Waste of time i won't be compisated for. Unfortunately seems to be the new norm!

Stopped working after second use. Also wouldn't calibrate correctly. Crap, save your money, but something better

I got it to help set pH in my saltwater pool. After watching some videos I eventually did figure out how to calibrate it. Probably didn’t need to since it was calibrated out of the box. For some reason when I use it on my pool water it takes a long time to equilibrate the final PH

Compleatly inacurate after calibration, Useless . Total waste of money

Product is defective and poorly made. We could not get it to read accurately, and had to replace it with a more reputable brand. I would not recommend purchasing this item!

I have an Aphera meter and use this one to verify my readings. This one works just as well as the more expensive Aphera.

I depend on this thing religiously I use it often just wish it came with more calibration solution

校正しても、数値がメチャクチャで使い物にならない為、返品します

リトマス試験紙だけでは正確性が足らないと思い購入しました。正直、毎日使用するにあたり毎回は校正出来ないので日に日に正確性は損なわれますが、その誤算をある程度計算して水質のバロメーターとしてはリトマス試験紙よりは良いかも知れません。特に弱アルカリの水質の魚を飼育していくうえでは、有った方が個人的には安心してます。

水槽のpHを計測するとき、どうしても中性域なのでpH試験紙ではまともに測定できません。このpHメーターはきちんと校正さえすれば、近い値を出します。流石に堀場とかの数万するやつに比べれば数値は安定しないし、再現性は悪いです。まぁでも、ph8.5の液が8以下に表示されることはないし9以上に表示されることはないです。この価格でこの正確さならオッケーです。

数値がめちゃくちゃ、校正液3種類とも役に立たず。はちゃめちゃな数字がランダムに表示されます。これなら水を舐めて判断した方がマシ

これで安心して水管理ができます。