When used in conjunction with standard syringes, liquid samples may be added or withdrawn from multiple neck flasks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