Certified vials, 8 x 40 mm (caps included), pk of 250 volume 1 mL, amber glass vial, clear polyethylene cap: 29435-U: Certified glass inserts for 12 x 32 mm, large opening vials volume 0.2 mL, clear glass insert (with plastic bottom spring), O.D. × H 6 mm × 29 mm, pkg of 100 ea: 29436-U: Certified glass inserts for 12 x 32 mm, large opening vials