Which scientific product design innovation resulted from an accidental discovery when a researcher noticed that bacterial samples weren't growing in a specific area of a petri dish?

The process of designing scientific products often involves navigating complex challenges, from material science constraints to regulatory hurdles. Some of the most impactful scientific products emerged from unconventional design approaches or surprising insights. Test your knowledge about a groundbreaking scientific product that revolutionized laboratory efficiency and accuracy.

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PCR thermal cycler
Penicillin
Mass spectrometer
Gel electrophoresis apparatus