Phos? Hanna checked mine at.....

There is no conversion for the 713.. that's how I can tell he used the 736 phosphorus checker that converts to phosphate The purpose of the phosphorus checker is to check your phosphates. Anyone buying a new checker to check phosphate should be buying the 736 phosphorus checker as it is much more accurate.

 

Looks like I had some misunderstandings on the Hannah checkers when I first read about them a year or so ago that I have carried with me up until today. I just did a little refresher research that got a little confusing based on all the conflicting opinions, but then I read a post from Hannah themselves on 9/22/14 that I will post below.

I've been using the 713, but I'm now going to purchase the 736. Thanks for the discussion!


"Hello, and thank you for your interest in the Hanna checkers! There are some key differences between the two checkers. The HI 713 is designed for most water applications, while the HI 736 is a marine checker, which is designed for use with saline water. The HI 713 gives results in ppm phosphate, and the HI 736 gives results in ppb phosphorus; the HI 736 is therefore more sensitive because it can detect much lower concentrations. Regardless of the checker units, the results can easily be converted to the desired units by multiplying by a correction factor.

To convert from phosphate to phosphorus, divide results by 3.066, and to convert from ppm to ppb, multiply by 1000. To convert from phosphorus to phosphate, multiply results by 3.066, and to convert from ppb to ppm, divide by 1000. In summary, when deciding which checker is right for your application, consider (1) the salinity of the water, and (2) the expected concentration range, remembering to convert units if necessary.

Hanna Instruments


__________________
Hanna Instruments USA
Woonsocket, RI
http://www.hannainst.com/usa"

 

thanks Av8 and Todd.

Will have to look into the 736 myself

 

Thanks AV8 and another Mike, et. al.,
I didn't know either, but If I get one, it'll be the phosphorus, etc.