Agilent 7820 GC Service
63
It is often more convenient to replace dirty jets with new ones
than to clean them, especially jets that have been badly
contaminated.
1 Gather the following:
 Small ultrasonic cleaning bath
 Aqueous detergent
 GC-grade methanol in a Teflon wash bottle. Wash bottles
made of other materials usually contain plasticizer
contaminants
 Dry, filtered, compressed air or nitrogen
 Clean cloth
If you are cleaning the jet, run the cleaning wire through the tip of
the jet. Run it back and forth a few times until it moves smoothly.
Be careful not to scratch the jet.
Place the parts in your glassware, cover them with the aqueous
detergent, and place them in the ultrasonic bath.
If you are cleaning the castle, sonicate for only 5 to 10 seconds.
Push the wire brush through the collector.
For other parts, sonicate for 1 to 5 minutes.
Remove the parts from the bath.
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