Avantor Performance Materials is a global manufacturer of performance materials and chemicals for leading-edge pharmaceutical, biopharmaceutical, laboratory, research and electronics applications.

Created by the acquisition of Mallinckrodt Baker, Inc. from Covidien by an affiliate of New Mountain Capital, Avantor is the new incarnation of two companies instrumental in establishing today’s global chemical and materials industries – Mallinckrodt Company, founded in 1867, and J.T. Baker Chemical Co., founded in 1904.

Sold under the industry-leading brands J.T.Baker®, Macron Fine Chemicals™, Rankem™, Diagnova™ and POCH™, Avantor's products are engineered to help our customers tackle new technology challenges in demanding research and materials manufacturing businesses. Our goal: to help the world’s leading pharmaceutical, laboratory and electronics manufacturing organizations achieve increased performance, faster time to market and lower cost of ownership.

Widely used in research, quality control laboratories, environmental testing and university research institutions, our products are recognized for delivering exceptional quality, purity and consistency, a reputation built upon over a century of commitment to excellence by our predecessor companies.