Agreed. When mine arrives, I’ll try it in my DT to get a comparison against my Apex.I haven't seen anyone suggest that this was going to be their approach. Standard practice in this hobby to have comparatives and redundancy. In my case, it's hanna and salifert to measure against.
But it’s final home is my QT. Just want something that gives me a quick visual indication. I have Hannas to get detailed results.