| Business | Phone |
| American Aquatic Testing Inc 890 N Graham St, Allentown 18109 | (610) 434-9015 |
| Luminaire Testing Laboratory 905 Harrison St # 126, Allentown 18103 | (610) 770-1044 |
| Silliker Laboratories Of Pa 6390 Hedgewood Dr, Allentown 18106 | (610) 670-9940 |