Sample Introduction Systems

Maintenance

I prefer glass components because of their ease of operation and cleaning. It is always best to start the day with a clean nebulizer, spray chamber, and torch. Cleaning the torch daily will also extend its life. There are many cleaning solutions that can be used. Some of our analysts prefer 1:1 Nitric acid and water and others prefer sulfuric acid and hydrogen peroxide. Another common cleaning solution is 1:1 HCl nitric. All of these solutions will work depending upon the nature of the contaminants. The sulfuric/peroxide is generally a severe approach and needed only if organics such as grease, etc, are suspected.

Be advised that ultrasonic baths are great for cleaning. However, NEVER use them to clean a glass concentric nebulizer. Glass concentric nebulizers are cleaned by leaching and occasionally by applying a backpressure with water to remove lodged particles. The use of a cleaning wire or ultrasonic bath is a sure way to destroy the nebulizer.

In summary, when it comes to ICP introduction systems there is no substitute for experience. Relatively speaking, introduction systems are simple but they are not easy to maintain and they are challenging to operate to their maximum potential.

Was this helpful?  Tell a Friend | Let us know