Renfro
Well-Known Member
Ok, I wanted to have some extra pH meters so I didn't have to keep walking from room to room to track down my bluelab. I picked up some of these cheapos from amazon and I must say I am impressed.
I have used three of them for up to a week without re-calibration and since I didn't trust them yet I used them side by side with the bluelab. I have been very pleased with their accuracy and stability, every bit as good as a blue lab and you get 2 points of accuracy. Had times the yellow pen read something like 6.68 and the blue lab read 6.7 so not having it round the numbers is nice.
I wasn't impressed with their calibration powders that you have to mix up. The meters use a 6.86 calibration solution and I found a bottle on Amazon. That was the only real hiccup with these meters.
https://www.amazon.com/Accuracy-Measurement-Household-Drinking-Aquarium/dp/B07RY488QV/ref=lp_5088419011_1_2?s=industrial&ie=UTF8&qid=1564932491&sr=1-2
https://www.amazon.com/gp/product/B017KP6AKQ/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
Anyways, I wanted to share this find.
I have used three of them for up to a week without re-calibration and since I didn't trust them yet I used them side by side with the bluelab. I have been very pleased with their accuracy and stability, every bit as good as a blue lab and you get 2 points of accuracy. Had times the yellow pen read something like 6.68 and the blue lab read 6.7 so not having it round the numbers is nice.
I wasn't impressed with their calibration powders that you have to mix up. The meters use a 6.86 calibration solution and I found a bottle on Amazon. That was the only real hiccup with these meters.
https://www.amazon.com/Accuracy-Measurement-Household-Drinking-Aquarium/dp/B07RY488QV/ref=lp_5088419011_1_2?s=industrial&ie=UTF8&qid=1564932491&sr=1-2
https://www.amazon.com/gp/product/B017KP6AKQ/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
Anyways, I wanted to share this find.