12/7/2016 · Wide opening, amber, crimp top, write on spot, ml 100% pk product information the wide opening crimp cap provides a larger target area for improved auto sampler needle accuracy. They also offer superior maneuverability, so your most complex runs will proceed successfully. 5ml dimensions 12 x 32mm type vial, crimp top, amber with write on spot, certified, 2 ml, 100% pk.