What should be checked if the sample becomes turbid after the addition of the copper test reagents?

Document ID

Document ID TE263

Published Date

Published Date 27/05/2017
Question
What should be checked if the sample becomes turbid after the addition of the copper test reagents?
Summary
Sample becomes turbid after adding reagents
Answer
The most common cause for turbidity after the addition of the chemistry is the pH of the sample. Confirm that the sample is between 4-6 pH prior to performing the test. Use nitric acid or potassium hydroxide to adjust the pH of the sample.