Glass Burette 50 mL with Taflon Stopcock

A Glass Burette 50 mL with Teflon Stopcock is a precision laboratory instrument commonly used in titration procedures and other experiments where precise measurement and controlled delivery of liquids are required. This type of burette is typically used in chemistry, biochemistry, and pharmaceutical labs, as well as in educational settings.

Specifications of Glass Burette 50 mL

• 50 ml borosilicate ASTM burette
• Teflon stopcock
• Single straight bore
• Class B (Glass Burette 50 mL)
• 0.1 ml ceramic graduations
• Tolerance ±0.10 ml
• Made from high-quality 3.3 borosilicate glass
• Superior chemical durability*
• Complies with DIN ISO 385 and ASTM E1272

*See the specifications tab for temperature and chemical durability information.

Key Features and Uses of Glass Burette:

1. 50 ml Capacity:
   • The burette has a 50 ml capacity, making it ideal for titrations and other applications where you need to measure and dispense a moderate volume of liquid with high accuracy.
2. High Precision:
   • Burettes are designed for precise volume measurements. With clear graduation marks on the glass, users can easily read the liquid levels with great accuracy, often down to 0.1 ml. This makes it perfect for experiments that require very precise volumes of reagents.
3. Glass Construction:
   • The burette is made of high-quality glass, which is resistant to most chemicals and allows for clear visibility of the liquid inside. Glass also provides good resistance to corrosion and is easy to clean and maintain.
   • Glass burettes are typically more accurate than plastic alternatives due to their stable material properties and less susceptibility to volume changes due to temperature variations.
4. Teflon Stopcock:
   • The Teflon stopcock is a key feature of this burette. Teflon is a highly chemical-resistant material, making the stopcock durable and resistant to the corrosive effects of many chemicals. It also provides a smooth and leak-proof seal, ensuring accurate flow control when dispensing liquids.
   • The stopcock allows for fine control over liquid dispensing with minimal risk of leakage or evaporation, which is critical in applications like titrations where small, controlled amounts of a reagent must be added to a solution.
5. Graduation Marks:
   • The burette is graduated along its length, with precise markings that allow the user to accurately measure and dispense liquid volumes. The graduations are usually marked in milliliters, and the scale is typically designed for easy reading, often in increments of 0.1 ml or 0.2 ml for high precision.
6. Applications:
   • Titration: The burette is primarily used in titration experiments, where a solution of known concentration is added to a solution of unknown concentration to determine its concentration. The Teflon stopcock allows for slow, controlled dispensing of the titrant.
   • Accurate Reagent Delivery: It can also be used for dispensing small, controlled amounts of reagents in a variety of experiments, making it essential for applications that require high precision, such as in the preparation of standard solutions.
   • Laboratory Analysis: In analytical chemistry, it is used for volumetric analysis, where precise volumes of liquids must be added to reach a specific reaction endpoint.
7. Durability and Easy Maintenance:
   • The Teflon stopcock and glass body ensure that the burette is both durable and easy to maintain. It can be cleaned thoroughly after each use, ensuring no chemical residue remains that could interfere with subsequent measurements.
   • The glass construction is robust, though care should be taken to avoid sudden temperature changes or physical impacts that could cause the glass to break.
8. Temperature Resistance:
   • The Teflon stopcock is also resistant to a wide range of temperatures, meaning the burette can be used in various experimental conditions without affecting the flow rate or accuracy.

The Glass Burette 50 ml with Teflon Stopcock is a high-precision laboratory tool designed for accurate liquid measurement and controlled dispensing. Its combination of high-quality glass for visibility and Teflon stopcock for precision makes it an essential instrument in experiments like titrations, reagent preparation, and volumetric analysis. Whether you’re conducting routine lab work or performing critical experiments, this burette offers the precision and reliability required for accurate results.