Most mass spectrometers handle a few molecules. This new prototype handles billions

Mass spectrometry is a widely used technique that helps scientists determine what molecules are present in a sample and how much of each there is. However, most current instruments examine molecules one at a time or in very small groups. This approach can be slow, expensive, and prone to missing rare but important molecules hidden among more abundant ones.

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3. Most mass spectrometers handle a few molecules. This new prototype handles billions