Life Technologies Corporation has a $10.7bn market capitalization and private equity firms KKR and Co, Blackstone Group, Bain Capital and TPG Capital, are also interested, according to the sources cited in the report.
The board of directors of Life Technologies announced in a statement earlier in January that they have retained Deutsche Bank Securities and Moelis & Company to assist in its annual strategic review.
But the statement added that the board had not decided on any specific course of action.
Thermo Fisher manufactures process instrumentation tools for processing and packaging from ingredient handling to inspection of food products and quality control.
Life Technologies offers PCR assays and reagents to food testing solutions for a range of pathogens on a variety of products.