Can this be used to determine if loose fill insulation contains asbestos?

Actually if you send a lot of material they won't know which part of the material to use because the lab needs only a small amount approximately an inch by inch by quarter inch. My qualifications are that I've been in the mold business over 15 years and it's closely associated with the most other Airborne or environmental concerns . Laboratories are equally or even most important. They need to be aiha certified, otherwise you're dealing with a company that really isn't worth your your time and and Trust.