My last blue lab ph pen lasted me more than a year and it comes with a one year warrantyWhat specific blue lab model?
Or just anything blue lab?
Average lifespan for these?
I have both from all ends of the price spectrum. Hanna has been around longer and better IMO.I'd like to hear the opinion of somebody who has owned both a Hanna and a Blue Lab.
Hanna worked for me.
This 100%, buy two $10 tds pens, then put the savings into a good ph pen. I'd just like to add, having a good PH test kit is nice as a backup. Everyone uses the hydrofarm one, but honestly, it sucks. My favorite is the Sera brand made for aquariums-nice glass test tube, double sealed reagent, and it's by far the easiest to distinguish the colors of each ph level on the chart-you guys will love it I swear, German quality baby!For tds / ppm the $10 type are fine. I have 2 different brands/models so I have a backup.
PH pen, buy the best you can afford and take care of it.