Whats your recommendation for pH pen with temperature compensation?

[TehBrainz]

I'm looking for a reliable (but not top of the line) pH pen with temp compensation.

I have a vivosun 3 in 1 pH/temp/TDS that's a piece of junk. The temp is pretty far off and even after calibration, it doesn't seem to hold.

What are you using or have heard has good reviews?

 

[Saltyreef]

I'm looking for a reliable (but not top of the line) pH pen with temp compensation.

I have a vivosun 3 in 1 pH/temp/TDS that's a piece of junk. The temp is pretty far off and even after calibration, it doesn't seem to hold.

What are you using or have heard has good reviews?

I have an oakton pen that measures temp PH and TDS i use for my tank and RO.

Its extremely accurate and easily calibratable but i believe its discontinued.

The replacement tester has a salinity option though which is a plus.

I have the one on the right. The PTtestr35.
The new version is on the left and i think they sell them on amazon too.

https://www.coleparmer.com/compare/3563435,3542505

 

[Saltyreef]

I just looked at the specs and it seems the salinity scale only goes up to 10PPT