The international biotech company Thermo Fisher Scientific announced a $50 million expansion plan this week that will include adding manufacturing space and jobs in Logan.

According to a company press release attributed to Logan site leader Dustin Warner, the planned expansion will double the size of Thermo Fisher’s facilities on Hyclone Drive in Logan and add an estimated 200 jobs.

Thermo Fisher already employs close to 900 workers in Logan.

According to the press release, the expansion is meant to meet growing demand for the company’s single-use bioprocess containers, which are produced in a sterile “cleanroom” environment and used in the production of vaccines and other biologic drugs.

In addition to the Logan expansion, Thermo-Fisher announced it will increase assembly capacity at plants in Cramlington, United Kingdom, and Millersburg, Pennsylvania.

The Logan expansion, projected for completion at the end of 2020, will add roughly 20,000 square feet of cleanroom space. It will be on land purchased from the City of Logan adjacent to the Thermo Fisher building at 1726 Hyclone Drive, just south of Logan’s Rendezvous Park off U.S. Highway 89-91.

Thermo Fisher has been in operation in Logan since the early 2000s, when the company Fisher Scientific purchased the local biotech company HyClone, then merged with Thermo Electron Corporation.

HyClone was started by Rex Spendlove, a Utah State University professor who developed methods to produce high-quality serum for research needs.

In 2014, a portion of the Thermo Fisher operation in Logan was sold to GE Healthcare.