Product features

The brown burette with a PTFE (polytetrafluoroethylene) stopcock of Class B is a commonly used glass instrument in laboratories, which is widely applied in fields such as chemical analysis, pharmaceutical testing, and environmental monitoring. Its tube body is made of brown glass and is equipped with a PTFE stopcock. Although the accuracy of Class B is slightly lower than that of Class A, it can still meet the requirements of most routine experiments and analyses, providing users with relatively reliable measurement data at a reasonable cost.

The brown glass material can effectively block ultraviolet and visible light, providing reliable light protection for light-sensitive solutions. During the titration process, it can minimize the influence of light on the solution, preventing chemical reactions such as decomposition and oxidation of the solution due to light exposure, and ensuring the accuracy and reproducibility of experimental results.

PTFE has excellent chemical inertness and can withstand corrosion from various strong acids, strong alkalis, organic solvents, and strong oxidants. This allows the burette to be used for titrating various corrosive solutions, expanding its scope of application.

The PTFE stopcock fits tightly against the inner wall of the burette, which can effectively prevent the solution from leaking and ensure the accurate measurement of the solution volume during the titration process. Even after prolonged use or frequent operation, it can still maintain excellent sealing performance.

The stopcock rotates smoothly, enabling users to easily control the flow rate of the titrant and achieve precise titration. Whether it is a slow drop or a rapid release of the solution, it can be flexibly adjusted according to the experimental requirements.

Product details

The scale on the tube body is processed with precise techniques. The scale lines are clear, uniform, and the graduations are accurate. Although the Class B accuracy has a certain allowable error range, under normal usage conditions, it can still provide relatively reliable volume measurement data for experiments and meet the accuracy requirements of routine experiments.

The high-quality brown glass tube body has excellent physical properties. It is resistant to impact and wear, and is not prone to cracking. The PTFE stopcock also has a long service life, reducing the cost and trouble caused by frequent replacements due to instrument damage.

Product specifications 

Product applications

The brown glass burette with a PTFE stopcock is suitable for various chemical experiments and analytical scenarios that require precise measurement and dispensing of liquids. It is especially suitable for light-sensitive solutions because the brown glass can block light, reducing the possibility of the solution deteriorating due to light exposure. The PTFE stopcock, on the other hand, has excellent corrosion resistance and sealing performance, ensuring the accuracy and reliability of the titration operation.