Certifications · Texas Board of Professional Engineers Registered Engineering Firm · BBB Accredited Business Since 2001 · Texas Department of Public Safety Precursor Chemicals/Laboratory Apparatus · Texas Department of State Health Services Radioactive Material License · Annual tests are conducted on all lab testing equipment with certification tickets to assure they work properly Sam Engineering & Testing, LP 1115 Luke St., Suite #100 | Irving, TX 75061 Phone: 972-790-1910  |  Email: sam@sameng.net