Does Hach have a total or orthophosphate test that can measure less than 50 µg/L PO4-P?

Document ID

Document ID TE366

Version

Version 3.0

Status

Status Published

Published Date

Published Date 25/01/2018
Question
Does Hach have a total or orthophosphate test that can measure less than 50 µg/L PO4-P?
Summary
Testing total or orthophosphate below 50 µg/L PO4-P
Answer
Yes, an ultra low range phosphate method has been created utilizing TNT843 reagent vials and a DRB 200 reactor.

Application note Lit 2097 details a procedure that has a method detection limit (MDL) of 4.95 µg/L PO4-P for Orthophosphate and 5.35 µg/L PO4-P for total phosphorous. The concentration range for this application is 10 to 500 µg/L PO4-P.