541380 - Testing Laboratories
This industry comprises establishments primarily engaged in performing physical, chemical, and other analytical testing services, such as acoustics or vibration testing, assaying, biological testing (except medical and veterinary), calibration testing, electrical and electronic testing, geotechnical testing, mechanical testing, nondestructive testing, or thermal testing. The testing may occur in a laboratory or on-site. Cross-References. Establishments primarily engaged in-- ? Laboratory testing for the medical profession--are classified in Industry 62151, Medical and Diagnostic Laboratories; ? Veterinary testing services--are classified in Industry 541940, Veterinary Services; and ? Auto emissions testing--are classified in U.S. Industry 811198, All Other Automotive Repair and Maintenance.