Nelson-Jameson Acidity Test Filling Tube Assembly with #9 Stopper

The filling tube assembly connects a reservoir bottle of a standardized neutralizing solution to the burette, allowing the burette to be easily and automatically filled with the titrant. The stopper creates a sealed or air-tight connection between the filling tube, the burette, and the reservoir to prevent contamination and ensure accuracy.

Includes (1) test filling tube and (1) #9 stopper.