American Marine PINPOINT pH Probe

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

I have used Pinpoint PH monitor for 15 years from saltwater aquarium to freshwater aquariums. The probes have always been easy to calibrate and last. However the probes from this company are temperamental and the bulb on the end always seem to break. After owning 2 of these now in ~18 months my opinion is they are of poor quality. And the package is poor, makes me think they are used. I would rather spend the extra money and get my probes direct from American Marine

Quality is subpar. Save your money.

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!

PINPOINT. This is my go to replacement brand sensor for my reef tank monitoring system. Have used many over the years. Very reliable, high value.

best ph probes to use for my apex controller. Cant tell much difference between this and the professional grade. I would save a few bucks.

This works great with the Digital Aquatics Reef Keeper Elite. All I did was calibrate it using pinpoint 7 and 10 pH fluid and it works perfect.

The probe is American Marine, the listing was not very clear. After calibration it has worked perfectly with my Milwaukee monitor. It did arrive loose in a small box but was packaged safely. The plastic end cap protecting the delicate bulb was intact and full of storage solution plus a bit of cotton to hold moisture. Shipping was fast.

Loses calibrationQUICKLY !!!!

Best ph probe I’ve ever had.