Hose barb accommodates 1/4 inch ID tubing

·         Tubing can remain permanently attached since the opposite end is designed to be easily assembled via a positive threaded seal

·         Proper positioning of the connector provides greater flask stability, as tubing angled downward has less tendency to tilt the flask

·         Flasks are designed for vacuum to 29” of mercury

·         Made with a heavier wall than a standard Erlenmeyer flask

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