"Commercial laboratories" refers to privately-owned facilities or companies that perform scientific tests, experiments, or research for business or commercial purposes. Full definition
Commercial laboratories give us «quality control» when we don't believe our own results. (yourpetsbestfriend.com)
In addition, collaborations between pharmaceutical companies and academic institutions are becoming much more common, with pharmaceutical companies supporting Ph.D. studentships and providing placements for students in commercial laboratories. (sciencemag.org)
It also uses two independent commercial laboratories to corroborate its internal test results. (fooddrink-magazine.com)