Hanna Phosphorus ULT VS HR

[Mengchhorn Chhun]

ok so normally i always concern about my phophate and my weekly test show around 0.5ppm on Hanna Phosphate HR. And today i just received my Hanna Phosphorous ULR and it show 13ppb that 0.04ppm so why they both different ???

 

[jsker]

Good question, I will let @Hanna Instruments explain that one. Here is a good explanation from Hanna's Blog link

 

[Brew12]

ok so normally i always concern about my phophate and my weekly test show around 0.5ppm on Hanna Phosphate HR. And today i just received my Hanna Phosphorous ULR and it show 13ppb that 0.04ppm so why they both different ???

What you are seeing is within the accuracy of of the HR phosphate checker.

If the actual reading is 0.04ppm it can read up to 1ppm and be within its listed accuracy.

 

[Brew12]

Just for comparison, here is the ULR phosphorus checker.

So 13ppb could fall into a range between 8ppb and 18ppb.

Much better accuracy at low phosphate levels.

 

[Mengchhorn Chhun]

wow thank guy, i should have use the ULR awhile ago so i don’t need to chase that number till now, it make a peace in mind for me right now.

 

[Brew12]

wow thank guy, i should have use the ULR awhile ago so i don’t need to chase that number till now, it make a peace in mind for me right now.

Glad to help!

 

[Randy Holmes-Farley Verified Community Expert]

ok so normally i always concern about my phophate and my weekly test show around 0.5ppm on Hanna Phosphate HR. And today i just received my Hanna Phosphorous ULR and it show 13ppb that 0.04ppm so why they both different ???

edit: never seen anyone use this Hanna. Too high of range.

 

[Randy Holmes-Farley Verified Community Expert]

What you are seeing is within the accuracy of of the HR phosphate checker.

If the actual reading is 0.04ppm it can read up to 1ppm and be within its listed accuracy.

edit; never seen anyone actually use this Hanna.

 

[Hanna Instruments]

edit; never seen anyone actually use this Hanna.

ok so normally i always concern about my phophate and my weekly test show around 0.5ppm on Hanna Phosphate HR. And today i just received my Hanna Phosphorous ULR and it show 13ppb that 0.04ppm so why they both different ???

The HI717 High Range Phosphate Meter has not been tested for saltwater and uses a different method than the HI713 or HI736.


This article will explain the difference between the LR Phosphate meter and ULR Phosphorus meter.
http://hannainst.com/resources/aqua...ates-in-your-reef-tank--hanna-instruments.pdf