The cone shaped triangular flask (solid barrier) is a laboratory glassware item from Leigu, designed for general liquid handling and mixing tasks in research settings. Available in multiple capacities ranging from 25 ml to 1000 ml, it accommodates diverse experimental scales, from small-sample preparation to larger-volume reactions. Its conical triangular geometry promotes efficient swirling and minimizes spillage, while the solid barrier design adds structural stability. The transparent glass body enables clear visual observation of contents, making it suitable for titrations, solvent storage, and routine chemical or biological procedures. This reusable glassware offers a practical, neutral solution for standard laboratory workflows.