Industry: 8731—Commercial Physical and Biological Research
Establishments primarily engaged in commercial physical and biological research and development on a contract or fee basis. Noncommercial research establishments funded by endowments, grants, or contributions are classified in Industry 8733. Separate establishments of aircraft, guided missile, or spacecraft manufacturers primarily engaged in research and development on these products are classified in Manufacturing, Major Group 37.

Agricultural research, commercialFood research commercial
Biological research commercialIndustrial laboratories commercial research: except testing
Chemical laboratories, commercial research except testingPhysical research commercial
Engineering laboratories, commercial research: except testingResearch and development physical and biological: commercial
Codes Titles Number of US Businesses
8731Commercial Physical Research21,554
873100Commercial physical research7,816
87310000Commercial physical research7,816
873101Biological research6,392
87310100Biological research1,809
87310101Agricultural research606
87310102Biotechnical research, commercial3,823
87310103Food research154
873102Commercial physical research2,601
87310200Commercial physical research682
87310201Chemical laboratory, except testing198
87310202Commercial research laboratory855
87310203Computer (hardware) development589
87310204Engineering laboratory, except testing221
87310205Industrial laboratory, except testing56
873103Natural resource research2,384
87310300Natural resource research315
87310301Energy research859
87310302Environmental research1,210
873199Commercial physical research, nec2,361
87319901Electronic research672
87319902Medical research, commercial1,689