Apera InstrumentsAI1213 pH Pen r, Replacement Probe for Sx610

It's great that you can buy these without having to replace the entire device. I wish they were a bit cheaper but what can ya do. Was easy as anything to swap and appears to be working accurately. Have been using this ph pen for about a year and a half for growing cannabis. Works a lot better than cheaper ones I've tried. Very easy to calibrate.

Ya he utilizado este medidor ph y es rápido y preciso En este caso me han llegado dos sondas consecutivas que no han funcionado y he tenido que tramitar devolución. Casualidad 🤔

I love this. I think it's the best bang for the buck out there without compromising. I use this for hydroponics and the last one lasted just over a year.12/27/20 My second probe lased a year and a half. I just bought my third will see how it does

Replacement as bad as the old one

I bought this replacement probe 2 months ago to test wort pH for brewing, is giving me wildly different readings and no longer will even calibrate with the 4.0 pH calibration liquid. It was stored and cleaned properly, should last more than two months for the price.