This precision-molded vial, manufactured from polymethylpentene thermoplastic, has been validated for protein characterization work, as well as for ion and chiral analysis. It is a higher-precision alternative to the 2-mL glass vial (part number 144980) and can be used with grey vial cap (part number 144656). This vial can also be used as a vial holder for the microvial in place of part number 144657. Please update your method to compensate for the smaller vial volume as needed.