Which major scientific supply company's name comes from the periodic table elements that its founders originally sold as its primary products in the 1970s?

The intersection of science and retail has created some of the world's most recognizable brands. Companies in the scientific industry often have fascinating origin stories that reflect their technical innovations. This trivia question explores how a major scientific retailer's brand name connects to its chemical beginnings. Test your knowledge of scientific brand history!

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Sigma-Aldrich (named after sigma bonds in chemistry and founder Alfred Aldrich)
Thermo Fisher Scientific (named after thermal analysis techniques and founder James Fisher)
VWR (named for founders Vaughan, Winkler, and Rubenstein who specialized in glassware)
Fisher Scientific (named for founder Chester G. Fisher who specialized in laboratory apparatus)