American Marine PINPOINT pH Probe

Piece of garbage will not calibrate. With the 7 solution I can not even turn the dial enough to get it past 6. Waste of money

Sad to say not pleased 1 probe will not calibrate in buffer 4 on the slope . USA is to far to send back the probe hence one star.

Always use this replacement probe. They hold up better and stay accurate.

good

Quality is subpar. Save your money.

Loses calibrationQUICKLY !!!!

HAVE TO REPLACE PROBE EVERY FEW YEARS, USED DAILY, GOOD PRODUCT

This replacement probe adds new life to my American Marine PH meter. Calibration with this probe is easy and quick. It is working well for my planted tank.

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.

This probe had good characteristics in terms of stability, ability to calibrate, etc, but the bulb disintegrated after being inside the system after about two months.