I have had acceptable results so far, from my cheapo (<$20), amazon purchased, pen style meter.
What's been the issue with yours?
This MacDoDo 4in1 didn't read anything about 7: https://www.amazon.c...duct/B01EQV94U0
this 3in1 isn't sensitive enough, didn't really move pH reading even after 20 mins, and is hard to read: https://www.amazon.c...duct/B01EHU3QMM
I have 10 year old extech ph110 digital meter but the electrode isn't working anymore, I'm looking at $60+ to replace it
I'm thinking I might just have to, just to be able to do both liquid reading like Kombucha and also very fine soil readings as well