Do glass sample cells require pretreatment for use with chlorine samples?

Document ID

Document ID TE5825

Published Date

Published Date 27/05/2017
Question
Do glass sample cells require pretreatment for use with chlorine samples?
Summary
Glass sample cell chlorine pretreatment
Answer
Glass sample cells should be pretreated for chlorine demand before first use with chlorine testing, as well as occasional pretreatment may be necessary with regular use.
To pretreat, soak the sample cell in a weak bleach solution (1 mL commercial bleach to 1 liter of deionized water) for at least 1 hour. Rinse fully with deionized or distilled water.