This U.S. Census Bureau NAICS-based industry comprises establishments primarily engaged in conducting research and experimental development in the physical sciences, engineering, electronics, computers (including micro processors and integrated circuits), geology, mathematics, physics, environmental, and other allied subjects.

Cross-References. Establishments primarily engaged in--

Providing physical, chemical, or other analytical testing services (except medical or veterinary)--are classified in 54138000, Testing Laboratories;

Providing veterinary testing services--are classified in 54194000, Veterinary Services;

Providing medical laboratory testing for humans--are classified in 62151100, Medical Laboratories; and

Research and Development in other Life Sciences--are classified in 54171023, Research and development in biotechnology.