help with Hanna phosphate checker

[lastlight]

Originally Posted by Reef Pilot

Geez guys, it is really not that hard... I only use one vial, and always get it completely mixed every time. Like I said, just have to do it right as described above, and it is then very accurate and consistent.

my readings sometimes vary so it's good conversation to me. if there's ways to make the process more accurate it's worth discussing.