Quick Answer:The Burette, Class-B, with PTFE Key Stopcock is a graduated Class B burette in heavy-duty borosilicate glass, fitted with a PTFE key stopcock and made in five sizes from 5 ml to 100 ml.
Last updated: 18 October 2026
Key Features
Class B burette with a PTFE key stopcock.
Heavy-duty borosilicate glass.
Heat resistant and chemical resistant.
Graduated.
Capacities: 5, 10, 25, 50 and 100 ml.
Technical Specifications
Specification
Value
Class
Class B
Stopcock
PTFE key
Material
Heavy-duty borosilicate glass
Capacities
5 ml, 10 ml, 25 ml, 50 ml, 100 ml
Graduation
Graduated
How It Is Used
Mount the burette on a stand, fill it with titrant and use the PTFE key stopcock to run the solution into the flask, slowing to single drops near the end point. The readings taken before and after give the titre.
Frequently Asked Questions
What sizes is the Burette, Class-B, with PTFE Key Stopcock made in?
Five sizes: 5 ml, 10 ml, 25 ml, 50 ml and 100 ml.
Related Lab Glassware
See the full lab glassware range, or these related burettes and titration items:
