Part Number: 186005661CV. TruView LCMS Certified vials are produced following tightly controlled manufacturing processes and handling procedures. They are tested for cleanliness by mass spectrometers and for low analyte adsorption by ACQUITY/MS/MS. TruView LCMS Certified Amber Glass 12 x 32mm Screw Neck Vial, with Cap and Preslit PTFE/Silicone