Description

Burette 25ml – Class A PTFE Stop Cock (Pyrex)

The Burette 25mL – Class A with a PTFE stopcock is a high-precision laboratory instrument used for accurately measuring and dispensing precise volumes of liquid solutions. Here are the full details:

1. Capacity: 25 milliliters (mL) – This indicates the maximum volume of liquid the burette can hold.

2. Class A: This classification signifies the highest level of accuracy and precision among burettes. Class A burettes adhere to more stringent tolerance limits compared to Class B burettes, making them suitable for precise analytical work and titrations where accuracy is critical.

3. Material:

• Burette Tube: Made of Pyrex glass – Pyrex is a type of borosilicate glass known for its exceptional durability, resistance to thermal shock, and chemical inertness.
• Stopcock: Made of PTFE (Polytetrafluoroethylene) – PTFE is chosen for its excellent chemical resistance and low friction properties, ensuring smooth and precise control over the flow of liquids.

4. Graduations: The burette tube is meticulously graduated with highly accurate markings indicating volume increments. The graduations are typically in milliliters (mL) and may be subdivided into smaller increments (e.g., 0.1 mL or 0.05 mL) to facilitate precise measurements.

5. Accuracy: Class A burettes are manufactured to meet stringent accuracy requirements, typically with a tolerance level within ±0.05 mL for a 25 mL burette. This level of precision ensures reliable and reproducible results in analytical procedures.

6. Usage: Burettes are indispensable tools in analytical chemistry laboratories, especially in titration experiments where precise volume measurements of titrant solutions are crucial for determining the concentration of analytes in a sample solution.

7. Features:

• The PTFE stopcock offers superior control over liquid flow, allowing for precise titrations and dispensing.
• The burette may feature a straight or curved design, with a reservoir at the top for convenient filling of the burette with the liquid to be dispensed.
• Some burettes come equipped with a support stand or clamp for secure mounting during use, ensuring stability and accuracy.
• Class A burettes conform to rigorous international standards for accuracy and quality assurance, providing confidence in their performance.

8. Maintenance: Proper care and maintenance are essential to preserve the accuracy and longevity of Class A burettes. Regular cleaning, rinsing, and drying after each use are recommended to prevent contamination. Periodic calibration and inspection may also be necessary to ensure continued accuracy over time.

key features:

1. High Precision: Class A classification ensures the highest level of accuracy, typically within ±0.05 mL for a 25 mL burette, making it ideal for precise analytical work.
2. Quality Materials: Made of Pyrex borosilicate glass, renowned for durability, thermal shock resistance, and chemical inertness, ensuring reliability and longevity.
3. Smooth Control: Equipped with a PTFE stopcock, offering precise control over liquid flow with minimal friction, facilitating accurate titrations and dispensing.
4. Clear Graduations: Meticulously graduated markings on the burette tube enable easy and accurate volume measurements, aiding in precise analytical procedures.
5. Versatile Design: Available in straight or curved configurations, with a top reservoir for convenient filling and a support stand for secure mounting during use, enhancing stability and usability.
6. Compliance: Manufactured to meet rigorous international standards for accuracy and quality assurance, providing confidence in its performance.

In summary, the Burette 25mL – Class A with a PTFE stopcock is a precision instrument designed for demanding laboratory applications where utmost accuracy and reliability are paramount.