Product review (1 stars): Waste of money....
Wow.... OK, for starters you would think, "ok $40 is about half as much as some of the 'nicer' pH testers" Yeah... Until you spend it and realize that what you got was complete garbage. For starters it's horribly manufactured. It's made of very very very cheap plastic, I chipped the battery cover just sliding it open. That should have been the second I packed it back up and returned it. I opened it and the the readings where way off... Ok, not out of the norm considering it needs to be calibrated... So i pick up some pH test fluid. I calibrate it. Awesome! I use it, and it works. Great. Calibration was kinda ridiculous because the instructions must have been written by a high school kid or someone fluent in Engrish. The instruction manual has illustrations of parts that aren't included, pretty confusing IMO. The thermometer and humidity meter are pretty worthless for what I need it for. The water I use is left to sit open at room temp for an hour. Whatever. So after using it I put it away and two days later I opened it up and it was reading WAY WAY WAY higher than when I had calibrated it. I opened another calibration packet, calibrated, used it again, and noted the pH level. I put it away and a few hours later decided to test my water again because I know that the pH changes after a few hours, long story, it usually goes up a little. I open it, test again, and it's WAYYYYYYYYY off again, it's claiming water that I also tested using a liquid test kit was almost 2points higher than what my liquid kit was saying.  The storage container is cheap plastic, the plastic part that it sits in is paper thin plastic crap. Spend your money on a better meter.

Bottom line, I should have spent the extra $40 for a decent pH meter that I don't have to calibrate EVERY SINGLE TIME. That's gonna cost $1.50-$2 to calibrate every time I go to use it. I'm over it. Cant return it now that the battery cover is broken.