Problem with Optima 7300 DV

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Christin Siesing
Christin Siesing's picture
Problem with Optima 7300 DV

Hello,I have a Problem with my Optima 7300 DV (Perkin Elmer).I have replaced the Injector, because the old one is broken inside the adapter (I think, where the O-Rings are located).Now, after initing the plasma there is a noise (maybe like a sough). Then, after maybe 3 days of use (approx. 8 hours) the new injector looks like the old! There are black lines on the injector and the injector got a light yellow-colour.The Quarz-Torch has a white coulour at the border of its inner cylinder. Furthermore the plasma is pulsating.My Idea is, that the shear gas doesn't work correctly. An indicator could be, that I detect a gas leakage in the plasma-chamber, where the gas-tubes are. I think, there mustn't be gas in the plasma-chamber?Have anyone of you experiences with this kind of problem? I'm a beginner with ICP-OES, so I don't have an overview about all things which could be happend -.-.Best RegardsChristin