AVTR

Avantor, Inc.

A maker of mission-critical materials for labs and biopharma, Avantor sells high-purity chemicals (J.T. Baker), tubing (Masterflex), and medical-grade silicones (NuSil), delivered worldwide through its VWR channel. Its roots trace to 1904, when chemist John Townsend Baker began producing purer lab reagents; NuSil and the 1852-founded VWR distributor later joined the fold. Fun fact: in a 1993 silicone shortage, NuSil cloned discontinued materials so device makers could keep producing long-term implants.