Why are the Wastewater Effluent Standard Solution total nitrogen and TKN values are higher than what is printed on the bottle?

Document ID

Document ID TE1205

Version

Version 2.0

Status

Status Published

Published Date

Published Date 27/05/2017
Question
Why are the Wastewater Effluent Standard Solution total nitrogen and TKN values are higher than what is printed on the bottle?
Summary
s-TKN standard accuracy check
Answer
The Wastewater Effluent Standard Solution contains a component that adds 1.56-mg/L N to the Total N and TKN values. This is in addition to the 2-mg/L NH 3-N and 4-mg/L NO 3-N shown on the label.