Vials, screw top, clear glass volume 10 mL, O.D. × H 24.5 mm. Vials are suitable basically to inject samples from an autosampler. Autosampler needle pierces through the cap during injection and withdraws the required aliquots of sample from the vials. Screw top vials (volume 10 mL, O.D. × H 24.5 mm × 52 mm) are used on many autosamplers.