The basic buret is used to hold alkaline solution. Its lower end is connected with a rubber tube. Glass beads are placed in the rubber tube to control the flow of solution. A pointed glass tube is connected to the lower end of the rubber tube. Any solution that can react with the rubber tube, such as potassium permanganate, iodine and other solutions, cannot be put into the basic buret.

The burette with the latex tube containing glass beads at the lower end is called the basic burette, which is commonly used to measure the volume of non oxidizing dilute solution, mainly measuring the volume of alkaline dilute solution. Acids with oxidizing and erosive latex tubes cannot use the basic burette.