Wheaton amber glass vials, 1.5ml or 0.06oz, 8-425 screw thread finish with ptfe /silicone liner, black caps, type i borosilicate glass. (1.5 ml vial in vial file, clear, ptfe liner)these glass vials are the original design used in most autosamplers requiring traditional screw top vials. The vials are manufactured from type i borosilicate glass. Manufactured from clear and amber type i borosilicate glass limited volume inserts pre-assembled black polypropylene screw cap with septa. Warning: this product can expose you to chemicals including tetrafluoroethylene, which are known to the state of california to cause cancer. Prop 65 warning