General Tools PH501 Digital Pocket Review

I ordered this against my better judgment after reading other reviews. This is the cheapest PH tester after all and I figured if I was very careful it might last a year. I was wrong! It took all 5 uses, the digital screen stopped working and I was left with $50 of useless plastic junk. I have just sent this back to Revain and I am hoping they will give me credit and remove this item from their site.

When we first bought it, it worked well for about five months. Suddenly it stopped reading or calibrating the pH. The display jumps from 0 to 14 and does not stabilize. My husband works as an industrial maintenance technician and does a lot with pH systems. He contacted General Tools & Instruments about this issue using the "Contact Us" link on their website. After a week they didn't reply to help with the problem. My husband decided to take matters into his own hands to see if he could solve…

I've used a lot of PH pens over the years, most of which are between $20 and $100 new. Cheap ones have to be constantly recalibrated and are then usually unusable within a few months. The expensive pens I had were in no way superior to this $50 pen. For the money this is the best pen I have ever used. I've had it for about 6 months and it stays calibrated for a long time - and easily and accurately recalibrates itself when needed (rarely more than 0.2 drift). Many more expensive pens have…