Each one has a borosilicate glass tube body with a straight PTFE Traditional style stopcock. This stopcock reduces breakage, turns more freely than glass, and is designed for conditions ranging from general purpose to high vacuum.
These are Class B burets. The 50 mL is subdivided into .10mL increments and is accurate to + or - .05mL. The 100mL is subdivided into .20 increments and is accurate to + or - .20mL. The burettes have funnel-shaped openings for easy filling.
The stand is cast iron with a sturdy metal plated 24 rod and a 6" x 9" base. Also includes a double burette clamp.