Vials, screw top, silane-treated volume 2 mL, clear 1.5ml Vials at Thomas Scientific flat bottom for security with inserts I-D™ vials feature write-on patch with graduations at 0.5, 1.0 and 1.5mL Glastic vial features a glass insert pre-inserted inside of a clear TPX vial Standard opening screw thread glass vials have a capacity of 2 mL and