Burette with Rota Stopcock – 50ml

Burette with Rota Stopcock – 50 ml

The Burette with Rota Stopcock is precision laboratory glassware used to deliver controlled volumes of liquid during titration and volumetric analysis. Supplied by Elmo Agencies, a trusted scientific manufacturer in Ambala, this burette is suitable for acid-base titrations, redox analysis, solution standardization, and chemistry laboratory practicals.

A Burette with Rota Stopcock allows a titrant or other laboratory solution to be released in a controlled manner while the delivered volume is read from the graduated scale. This makes the burette particularly useful when determining the concentration of an unknown solution through titration.

The 50 mL capacity provides a practical working volume for routine analytical and educational chemistry experiments.

What Is a Burette Used For?

Burette with Rota Stopcock is primarily used in titration, where one solution is gradually added to another until a defined endpoint is reached. The volume delivered from the burette is then used in the relevant calculation.

The graduated scale allows the change in liquid level to be measured, while the stopcock provides controlled flow ranging from a continuous stream to individual drops.

Rota Stopcock

The Rota stopcock is designed to provide controlled liquid flow during titration. A PTFE stopcock can be operated without the need for conventional stopcock grease and offers useful chemical resistance for many laboratory applications.

The suitability of the stopcock should always be checked against the chemicals and conditions of the intended experiment.

Borosilicate Glass Construction

The burette is made from borosilicate glass, a material widely used in laboratory glassware because of its good chemical resistance and resistance to thermal shock compared with ordinary soda-lime glass.

Its transparent construction also allows the liquid level and meniscus to be observed during measurement.

Applications

• Acid–base titrations
• Redox titrations
• Volumetric analysis
• Standardization of solutions
• Analytical chemistry experiments
• School and college chemistry practicals
• Research and quality-control laboratories

Key Features

• 50 ml capacity
• Borosilicate glass construction
• Rota/PTFE stopcock
• Controlled drop-by-drop liquid delivery
• Graduated scale for volume measurement
• Suitable for titration and volumetric analysis
• Useful for educational and professional laboratories

How to Use

1. Clean and rinse the burette according to the laboratory procedure.
2. Fill it with the required titrant.
3. Remove air from the delivery tip and check the stopcock for proper operation.
4. Record the initial burette reading at the appropriate meniscus position.
5. Add the solution gradually to the receiving vessel while monitoring the reaction.
6. Near the endpoint, add the titrant drop by drop.
7. Record the final reading and calculate the volume delivered from the difference between the readings.

Important Precautions

• Ensure there are no air bubbles in the delivery tip before taking readings.
• Read the meniscus at eye level to minimize parallax error.
• Check the burette for cracks or damage before use.
• Make sure the stopcock operates smoothly and does not leak.
• Clean the burette thoroughly after use.
• Confirm chemical compatibility before using aggressive reagents.

Conclusion

The Burette with Rota Stopcock by Elmo Agencies is a practical instrument for controlled liquid delivery and accurate titration work. Its borosilicate glass construction and Rota stopcock make it suitable for volumetric analysis, solution standardization, chemistry practicals, analytical laboratories, and educational institutions.