Is there any way to troubleshoot flow through Lachat Cadmium Column for Nitrate determination?

Document ID

Document ID TE6376

Published Date

Published Date 03/26/2019
Question
Is there any way to troubleshoot flow through Lachat Cadmium Column for Nitrate determination?
Summary
Cadmium column flow concern
Answer
To check the flow through the Lachat Cadmium Column for Nitrate determination (Product # 50237A):
 
1. Disconnect the cadmium column from the manifold and reconnect to a green-greenpump tube.
2. Pump buffer through the packed column and collect it in a graduated cylinder. The flow rate should be greater than 4.0 mL per minute. A low flow rate indicates that the column is partially clogged. The direction of the column can be changed to see if flow improves in the other direction. 
 

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