Which scientific instrument company pioneered the 'try before you buy' marketing model in the 1970s that revolutionized how laboratory equipment was sold to research institutions?

In the competitive world of scientific product marketing, companies use various strategies to distinguish their innovations from others. From laboratory equipment to pharmaceutical breakthroughs, the way these products are introduced to the market can significantly impact their success. This poll tests your knowledge about a famous marketing campaign that changed how scientific products reach consumers and researchers.

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Beckman Instruments (now Beckman Coulter)
Perkin-Elmer Corporation
Varian Associates
Hewlett-Packard's Scientific Instruments Division