Product review (3 stars): Good while it worked
The meter works... Sort of. It worked fine the first couple of days then it started to give me false reading. So I calibrated it again but it's still not reading the right ph. And it sucks that you can't calibrate it using 7ph solution. You have to use either 4ph, 6.86ph, or 9.05ph solution so you have to keep buying the packets. Which is a huge inconvenience as I store it in a 7.0 ph solution when not in use. I'll try to calibrate it again but if it still doesn't work then I'll return it and look for a better one.