VialMAX™ 20mL Scintillation Vial with Separate White Screw Cap, Borosilicate Glass, case of 1,000. It is compatible with standard liquid scintillation counting systems, these vials are used for liquid scintillation counting, gamma counting, chromatography, sample storage, Measures 57mm tall (without cap) with an OD of 27mm. Mouth opening is 24mm wide, Gasket inside cap is made of Polyethylene (PE) and MORE! FREE SAMPLES AVAILBLE! Email clientservices@maxisci.com or contact your rep with your request!