properly assembled, this vial-cap combination provides the best seal for long term sample storage, as well as high volatility solvents. 12 x 32 mm, 11 mm Crimp-Top Vials and Closures Description 100/pk 1000/pk Vial, Crimp, v-Vial Clear, No Patch — AR0-3740-13 Vial, Crimp, v-Vial Amber, No Patch — AR0-3741-13