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

I used it to replace the probe on my Bluelab Guardian with no issues. Calibrated with no problem and has been working for a few months now. Quick accurate readings is all I can ask for and so far this thing is delivering at a fraction of the cost of Bluelabs probe. I'll update with any issues.

Purchase this replacement probe for my blue lab combo meter and it works smoothly.

Purchased as a replacement probe for my BlueLabs device. The electrode connected and calibrated perfectly and is giving consistent accurate readings. I don't know what the longevity will be, but at a fraction of the cost for a Bluelabs replacement, even if it lasts 1/2 as long it's still worth it.

It worked great if you’re testing and one of your test shows error just press on and come back to it. Once it gets a different foundation of the other calibrating test it should register.

Worked great for the price won’t go back to blue lab

For the money these probes work very good completely submersed. I calibrate every 10 days. I normally get 60 days use before latency in readings begins to be a problem. At about the 60 day marek the probes takes 2-3 times longer to report accurate PH. Specifically PH values between 5.5-6.0. If you are running auto PH systems this can be a problem. As the reservoir gets low and the PH swings high and the dosser dumps PH down to correct and that throws out the PH during feeding. When this occurs, time to replace.

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

It is working on my Ph meter. But accuracy is not good enough during testing with standard buffer.

When it came it didn't fit. I couldn't get through to the supplier to replace. Then when I eventually coil. I was told it is too late.

Remplacement de la sonde PH pour la piscine. Fonctionne parfaitement, à voir comment elle va durer dans le temps ?

Électrode pour le PH de mon eau de piscine reçue dans un coffret sans aucun dommage. Cela fait lz 2eme saison que je l'ai et fonctionne tout à fait correctement. Pour la part, je l'enlève pour l'hiver et la laisse tremper dans un produit adéquat.

Fait bien le travail sur mon Bluelab pour le prix.

Snabb leverans och ett bra pris på en mycket exakt PH mätare. Lång sladd vilket underlättade monteringen enormt.