Which scientific instrument company created such a revolutionary product in the 1940s that its brand name became a generic term for the device in laboratories worldwide?

In the world of scientific instruments, some innovations have fundamentally transformed research capabilities and led to countless discoveries. One particular company's breakthrough product became so synonymous with laboratory work that its name is now used generically, similar to how we use 'Kleenex' for tissues. Test your knowledge about this pivotal moment in scientific product history!

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Beckman Instruments with their 'pH meter'
Corning with their 'Pyrex' glassware
Beckman-Coulter with their 'DU spectrophotometer'
Thermo Fisher with their 'centrifuge'