How to wash high-performance liquid sample vials

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Never use a detergent containing a large amount of surfactant to clean the vial. 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 bottle 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 bottles 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.
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