About Us

ETI's inspectors, lab technicians and field personnel work on site, from our main office in Potomac, MD or at our laboratory in Ijamsville, MD.
12435 Park Potomac Ave., Suite 300
Potomac, MD 20854
Phone: 301.881.8313

P 301.881.8313 (Office)

10097 Tyler Court
Suite 16
Ijamsville, MD 21754
Phone: 301.831.8313
Fax Number: 301.831.1137

P 301.831.8313 (Laboratory)