Hanna Reagent Differences

[acesfull44]

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

 

[Potatohead]

It doesn't matter, you can use either ULR reagent with either ULR checker.

 

[JS_racer]

per hanna 12/18....

to clarify my previous question and your answer, does the reagent for the PPB ULR tester work for the PPM (new model discussed here) ULR tester?

does
HI736-25 = HI774-25 ?

No you need to use the HI774-25 for the HI774 and the HI736-25 for the HI736, even though they are similar, there are differences between the two.

NEW HI774 Phosphate Ultra Low Range Colorimeter – Checker® HC

What is the reason for this? I've wasted many reagents because of pressing the button at C2 instead of holding the button. All the other checkers (Ca, Alk, etc.) only require a press of the button at C2 except for phosphate/phosphorous, which requires holding the button down. Why not make it...

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