...March 23, 2020 TORONTO (S&P Global Ratings) March 23, 2020--S&P Global Ratings today assigned its '###+' issue-level rating to Thermo Fisher Scientific Inc.'s proposed senior unsecured notes, which it will issue in multiple tranches. The company plans to use the proceeds from these notes to partially fund its planned $11.5 billion acquisition of Netherlands-based life science and molecular diagnostic testing company Qiagen N.V., to repay Qiagen's debt, and for general corporate purposes. We affirmed our issuer credit rating on Thermo Fisher earlier this month following its announcement that it was planning to acquire Qiagen. The rating reflects our assessment of the company's significant scale as the largest provider of analytical instruments, equipment, and reagents for the research market with a large distribution network. Thermo Fisher's business risk also benefits from its regional and customer diversity, its ability to retain leadership in various end markets, and its track record...