HC HI713 for freshwater only?

[Nooonan]

First I am hearing of this but it came directly from Hanna. Did I miss a memo?

 

[Randy Holmes-Farley Verified Community Expert]

First I am hearing of this but it came directly from Hanna. Did I miss a memo?

More people use the 736 as it has a bit better accuracy at the low end:

http://hannainst.com/hi736-phosphorus-ulr.html

 

[Nooonan]

Thanks Randy sorry for the delay but your help is appreciated