FastTest pH test Vs Milwaukee smart pH tester

[kappa]

I tested my 12g nano cube at 8.3 with the FastTest pH test.

 

I tested my 12g nano cube at 8.3 with the digital Milwaukee smart pH tester.

 

Tested my 5.5g at 8.0 with the FastTest pH test.

 

Tested my 5.5g with 8.0 with the digital Milwaukee smart pH tester.

 

pretty accurate. For 44 bucks at diyreef.com, it's worth it.

 

I don't know how often the digital pH tester has to be calibrated, for that, I need to do some searching and reading.