Is there any suggested maintenance for the switching valve assembly used with the Lachat cadmium columns?

Document ID

Document ID TE6375

Version

Version 4.0

Status

Status Published

Published Date

Published Date 03/26/2019
Question
Is there any suggested maintenance for the switching valve assembly used with the Lachat cadmium columns?
Summary
Switching valve maintenance
 
Answer
Switching valve assembly (Product # 24927) maintenance
 
The switching valve ports should be rinsed thoroughly with deionized water once a week. Thoroughly clean spills on the switching valve immediately.
 
1. Remove the cadmium column from the switching valve. Be careful not to introduce air into the column.
2. Turn the switching valve to the closed position.
3. Connect a pump tube line to one port of the valve and run deionized water through it for two minutes. Connect the outlet to a waste line or allow the deionized water to drip into a beaker.
4. Repeat for the three remaining ports.
5. Turn the switching valve to the open position.
6. Repeat steps 3 and 4.
 

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