40ml Clear Vial found in: 40mL Clear Vial, TOC Certified 40mL Clear Vial, <10ppb, 24-414mm Open Top Closure, 0.068" septa, 72/case, 40ml clear.. compound analysis. Available in clear 33 expansion and amber 51 expansion borosilicate glass. Open top vials come assembled with polypropylene caps with low-bleed 0.125" PTFE/silicone septa inserted (.135" septa for E-series vials).