Which of these scientific products became so dominant that its brand name is now commonly used as a generic term for similar laboratory items, despite being a registered trademark?

In the competitive world of scientific equipment and laboratory supplies, some products become so revolutionary they transform how research is conducted. These innovations often create strong brand recognition that transcends their technical specifications. This trivia question explores one such iconic scientific product that became synonymous with its function and changed laboratory practices worldwide. Test your knowledge of scientific product history!

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Petri dish (named after bacteriologist Julius Richard Petri)
Eppendorf tube (small plastic centrifuge tubes by Eppendorf AG)
Bunsen burner (named after chemist Robert Bunsen)
Erlenmeyer flask (created by chemist Emil Erlenmeyer)