The GL45 threaded cap is an internationally recognised standard for threaded connections in laboratory glassware, conforming to ISO 2852. It is widely used in reagent and solvent bottles, as well as in high-performance liquid chromatography (HPLC) mobile phase bottles and similar applications. Thanks to its excellent sealing performance, high-temperature resistance and chemical corrosion resistance, it is ideal for use in laboratories where stringent requirements apply to solvent storage, vapour containment and safe handling.