Why did the total chlorine test turned black after adding the powder pillow to the sample?

Document ID

Document ID TE1439

Version

Version 2.0

Status

Status Published

Published Date

Published Date 27/05/2017
Question
Why did the total chlorine test turned black after adding the powder pillow to the sample?
Summary
Chlorine test turns black
Answer
If the total chlorine sample exceeds the sample concentration of the range, it is possible in extreme situations for the sample to turn a dark color. We recommend diluting your sample 1:10 and trying again to see if a pink color develops.