Incorporates the use of KONTES® PTFE “Varibor” metering plug 821111

·         Turning the adjusting knob allows control of flow rate from dropwise to full flow

·         Facilitates reproducible addition rates

·         Standard Taper joint at the top; Standard Taper joint with drip tip at the bottom

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