Long Body pH Electrode with BNC Socket Probe 300cm Cable 0-14pH for pH Meter, pH Controller pH Device Economical Sensor

Replaced a bluelab probe with this, works great. It's accurate and has been checked with other meters as well as calibration fluid. Awesome price.

Used to replace an old probe for my bluelab guardian. Calibrated without issue and is working at the same level of accuracy as the original probe.edit: Been using for about a year now, and it's still functioning perfectly. Just bought another for a separate meter.

I like the fact that it fits my blulab ph meter. From 2001 none the less. I've yet tried to calibrate the probe, but I suspect I won't have an issue.The probe itself looks well built, and 64.00 USD cheaper than the replacement blulab probe. (3 times)

Price looked good so thought I'd try it. If you're trying to use this with a blulab guardian, my experience is that it wouldn't calibrate. Might work for something else though

This is the second one I purchased. I am pleased with both purchases.

It works!

Delivered better than I expected! I have 6 different pricey pH units. My main ones are the bluelab guardian. The pH probes made by bluelab are $80-100 each, and are supposed to last 18months….but it’s more like 4-6 months….these not only work perfectly with the bluelab guardian, but they are 80% cheaper …AND they were actually slightly more accurate than the bluelab ones after calibrating. Stop wasting money on Bluelab replacement probes and just buy a ton of these.

so far so good. this was purchased as a replacement for my ph controller