Very trueI started with the salifert ALK test and then went to the Hanna checker.
Pros.
The Hanna checker gives you a firm number every time. No guessing at when the water has changed to the correct color.
Cons.
It's not nearly as fast as was hyped. Between pre cleaning, testing and post cleaning it's a 10 minute process. I can do the salifert test in half the time.