Amber. Marking Spot. Vials - Sciencix 2mL Clear Glass (12x32mm) with Graduated Marking Spot Wide Mouth 9-425 Screw LC/MS Certified Vial, 100/pk. Sciencix Part #: 11-3548. Vials & Syringes - MZ-Analysentechnik GmbH optimum performance in HPLC, GC/MS, and LC/MS applications.