Glass Burette 50ml with Rota Flow Control

Quick Answer

This 50ml glass burette is fitted with a rota flow control valve, a rotary stopcock that lets you dispense titrant drop by drop with fine control over the flow rate during a titration.

Description

A burette is a long, graduated glass tube used to deliver a precisely controlled, variable volume of liquid, most often as the titrant in an acid-base or other titration. The rota flow control at the base is a rotary valve that a technician turns to open or close the flow, offering smoother, more repeatable control over drop rate than some older stopcock designs, which helps when the last few drops of a titration need to be added very slowly.

At a 50ml capacity, this burette suits the great majority of standard titration procedures carried out in teaching and analytical laboratories, and its full-length graduation scale lets the volume dispensed be read accurately at any point during the titration, not just at the very end.

Specifications

Applications

• Dispensing titrant drop by drop during acid-base, redox, or other titrations
• Delivering a precisely controlled, variable volume where a fixed-volume pipette will not do
• Teaching laboratories demonstrating standard titration technique
• General controlled liquid dispensing wherever fine flow adjustment is needed

Care & Handling

• Mount the burette vertically in a burette stand and clamp before use
• Check that the rota flow control valve turns smoothly and does not leak before starting a titration
• Rinse the burette with the titrant solution before filling, so the first reading is not diluted by residual water
• Read the scale at eye level, noting the initial and final volumes to calculate the amount dispensed
• Clean the burette after use and store it according to your laboratory’s convention to keep the stopcock from sticking

Why Choose LabEquip

This burette is part of our full lab glassware range, so you can build a complete titration setup with conical flasks and pipettes in one order. Browse further apparatus in our chemistry lab equipment catalogue, and contact us for bulk laboratory orders.

Frequently Asked Questions

What is a burette used for?

A burette is used to dispense a precisely controlled, variable volume of liquid, most commonly as the titrant added during a titration, while its graduated scale lets you read exactly how much has been delivered.

What does “rota flow control” mean on this burette?

Rota flow control refers to the rotary stopcock valve at the base of the burette, which is turned to open or close the flow and gives smooth, fine control over the drop rate during a titration.

How do I read a burette accurately?

View the scale at eye level and read the bottom of the meniscus against the nearest graduation line, recording both the initial and final readings so the volume dispensed can be calculated by subtraction.

Should the burette be rinsed before a titration?

Yes, rinsing the burette with the titrant solution before filling it for the titration removes any residual water that could otherwise dilute the titrant and affect the accuracy of the result.

How should the burette be supported during use?

It should be mounted vertically in a burette stand with a proper clamp, positioned above the receiving flask so the titrant can be added in a controlled stream or drop by drop.

Can LabEquip supply burettes in bulk for a laboratory?

Yes, LabEquip supplies burettes in bulk for schools, colleges, and laboratories; contact us with your required quantity.

Last Updated: September 2026