| Business | Phone |
| Aqualab Inc 3400 De La Cruz Blvd, Santa Clara 95054 | (408) 727-0898 |
| Entech Analytical Labs Inc 3334 Victor Ct, Santa Clara 95054 | (408) 588-0200 |
| Evans Fwa Inc 2326 Walsh Ave, Santa Clara 95051 | (408) 986-9200 |
| Soil & Plant Laboratory Inc 352 Mathew St, Santa Clara 95050 | (408) 727-0330 |
| Riga Analytical Lab Inc 3375 Scott Blvd # 132, Santa Clara 95054 | (408) 496-6944 |