µg/mL UV, RI (non-MS) LC/GC Certified Vials 100’s ng/mL Older single quadrupole and MS/MS LCMS Certified Vials 1 ng/mL and lower MS/MS, Tof TruView LCMS Certified Vials Type 1, 33-Expansion Borosilicate Glass Analytical laboratories use type 1, 33-expansion glass, the most chemically-inert glass obtainable, in for high-quality test results.