Provides access to flasks and other containers when pierced by a syringe needle

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

When used in conjunction with standard syringes, liquid samples may be added or withdrawn from multiple neck flasks. Allows syringe needles to be used as capillary bleed tubes or bubblers.