Hardware manual

4-48 Agilent 7500 Series ICP-MS Hardware Manual
4Maintenance
1 Remove the transfer line and the spray chamber from the end cap.
Refer to the “Removing and Checking the Nebulizer and Spray Chamber”.
2 Thoroughly wash with pure water.
3 Soak in 5% Nitric Acid.
Soak the spray chamber in a 5% Nitric Acid bath overnight. If memory is a
problem, soak in a 10% Nitric Acid bath overnight. Wear safety glasses and
gloves when working with acid.
4 Rinse the spray chamber in pure water at least 3 times. After rinsing, dry
on a clean surface.
Cleaning the End Cap
1 Thoroughly wash the end cap of the Babington nebulizer or the
concentric nebulizer with pure water.
2 If it stains heavily, soak it with 5% Nitric Acid or clean it with the
ultrasonic wash, then rinse with pure water.
3 Check the O- ring for damage or dents.
4 Thoroughly dry the inside of the connector.
CAUTION
TMAH and ammonia water are basic reagents. Be sure to wear gloves when handling
them.
Do not mix basic reagents such as TMAH and ammonia water with acidic reagents
such as nitric acid and hydrofluoric acid.
Be sure to fully rinse parts soaked in basic reagents with pure water before use.