| Business | Phone |
| Copper State Analytical Lab 710 E Evans Blvd, Tucson 85713 | (520) 884-5811 |
| Horizon Laboratories Inc 6898 N Camino Martin # 120, Tucson 85741 | (520) 624-4112 |
| Underwriters Laboratories Inc 6401 S Country Club Rd, Tucson 85706 | (520) 889-0557 |
| Turner Laboratories Inc 2445 N Coyote Dr # 104, Tucson 85745 | (520) 882-5880 |
| Sigma Labs Inc 10960 N Stallard Pl, Tucson 85737 | (520) 575-8013 |
| Southern Arizona Testing Lab 1516 E 20th St, Tucson 85719 | (520) 623-3331 |
| Optical Data Assoc 5237 E 7th St, Tucson 85711 | (520) 748-7333 |