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Never use a detergent containing a large amount of surfactant to wash the LC-MS vials. If a residue remains in the mass spectrometer, it will form a PEG peak that is difficult to clean, which will greatly affect the judgment of molecular weight information.
The inside of the LC-MS vials can be washed one by one with 100% acetone and then sonicated with water + acetone. Ultrasonic with water. Allow to dry at room temperature.
It is best to be disposable. Now the plastic sample LC-MS vials are cheap.
Some parts use 50% formic acid + 50% methanol
Some parts can be cleaned with water
Some parts use methanol
But basically have to put aside all kinds of surfactants! Or it is difficult to wash with the leader, it takes time, and it will be used once in the future.
This is the end of the introduction of How to wash LC-MS vials. I hope it can help you.
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