When used in conjunction with standard syringes, liquid samples may be added or withdrawn from multiple neck flasks

·         Supplied with one 774200-0022 Blind Hole Rubber Stopper fitted to the top

·         Allows syringe needles to be used as a capillary bleed tubes or bubblers

·         Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements