What in the world is HR and LR?? will someone help please.

[person]

I am looking to buy a Hanna nitrate checker but I see that there is a high range and a low range checker. What is the difference and which one should I get?

 

[FernBluffReef]

High range (HR) vs Low range (LR). For Nitrates on a reef tank you want the High range.

When you get to looking a phosphates. They also make a high range and low range. For Phosphates on a reef tank you want the Low range

 

[Rob Biederman]

High range is the one I have. .1 ppm to 75 ppm is the range don’t really need to be more accurate than that