| Business | Phone |
| Analab Clinical Research 523 W 24th St D73d, Norfolk 23517 | (757) 627-7500 |
| Applied Laboratory Svc 4101 Granby St 404, Norfolk 23504 | (757) 623-0121 |
| Sgs North America Inc 1129 W Olney Rd, Norfolk 23507 | (757) 626-0006 |
| Marine Chemist Svc Inc Br Ofc 1000 W 27th St, Norfolk 23517 | (757) 640-1122 |
| Holmes Environmental Inc Norfolk 23502 | (757) 459-2130 |