American Marine PINPOINT pH Probe

Works perfectly with my BlueLab combo meter and at half the price too!

Loses calibrationQUICKLY !!!!

I had purchased from a friend the electronic part of the PH Monitor but he had broken the probe. Luckily I found this one from these sellers and it was perfect and brand new at a good price. Better than having to spent a 100 on a new unit.

Best pH meter on the market for the price. This is my third one. I find they should be replaced every three years or so. You can tell when there is an issue with accuracy after long term use. The solution inside becomes ineffective, or in the case of my last one, it developed miniscule leak that lead to algae in the sensor. No big deal, you cannot expect an instrument of this type to last forever.

Compaired to hanna and milwaukee probes and or checkers this ones seems a little off not by much but still off..

Measurements are repeatable. Has been very reliable for months.

This pen looks like it has broke on me already. I dont want to wait 10 min to see if that fixes it. Right now after 2 min in 7.0 solution, Im showing a reading of 11.2!@# I put in 4.0 solution for a cpl min, and Im getting a 1.1 reading...wtf!~@! Complete waist of money this pen was. Stick with bluelabs pen!

Arrived fast and was as described

Soaking solution had dried out when I received it. Packaged very poorly.

Writing this review after 1 year of use. So far is has worked great and is a good value. I have it working with the Atlas Scientific board in my Reef-Pi setup. The much more expensive Atlas probe died after 1 year and was not as accurate. So I would buy this again in future.