Which Hanna phosphate checker do you prefer and why?

[becky46]

Not sure which one to get - curious to hear which one everyone prefers.

 

[Lost in the Sauce]

My ULR has been useless since I bought it because my phosphates are unreadably high on it. Zero idea where they sit.

 

[Uncle99]

Hanna UL Phosphorus Checker.
Good with the low levels.

 

[Gtinnel]

I use the Hanna ULR Phosphate checker (HI774). I can't imagine my phosphate getting high enough to go over the .9 that it tests up to. I would've considered the ULR phosphorus checker but I don't want to look up the value on a chart to convert it to the scale I'm used to.