Diversified manufacturer 3M, St. Paul, MN, has entered into a definitive agreement with Polypore International Inc. to acquire its Separations Media business for $1 billion.
Polypore’s Separations Media business provides microporous membranes and modules for filtration in the life sciences, industrial and specialty segments. It posted annual sales of $210 million as of Sept. 27, 2014. 3M said filtration is a priority technology platform for the company.