American Marine PINPOINT pH Probe

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.

Works perfectly. I hooked it up to the HCS12 MC9S12C128 microcontroller and it produced proportional voltages correctly. Keep in mind that you need to purchase the calibration solutions (#7 and either/and #10, #4) to make sure your sensor is reading properly. The probe will read properly every time; negative voltages for one side of the pH scale and positive for the other. However, your sensor (be it homemade or bought) may not interpret and display the CORRECT pH value without calibration first.

I got it a few days ago. calibrated it. Works like a charm with apex. Seems accurate and I think better than the finicky apex one. (mine might have been defective) For $35, go for it ! I got another one about a year later. Came not calibrated , after calibration readings are totally wrong. Poor quality control. Disappointing for a brand I trusted.

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

Has anyone noticed these are slightly smaller diameter than normal and require extra tightening of the ph port gland in your calcium reactor?

I wont really know until I know how long it lasts. The orginal one did not last long at all.

Using to monitor pH in my CO2 injected planted aquarium. Easy to check at a glance that I have optimal CO2 levels that arent approaching dangerous levels for my fish.

To early to ask if product works as well as others. But so far it works great.

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.

Connected easily to my Neptune Apex.