So I have a Hanna Phosphorus ULR checker, and I have noticed I have 3 different types of reagents I have managed to accumulate, all #'d differently. I am wondering what, if any, are the differences between them. I have noticed a difference in results from using each so I am not sure which one to believe and/or trust. Any help here would be appreciated.
HI774-25
HI736-25
HI774-0
@Hanna Instruments
HI774-25
HI736-25
HI774-0
@Hanna Instruments