Volumetric pipettes are essential tools in laboratories for accurately measuring and transferring precise volumes of liquid. These instruments consist of several key parts of volumetric pipette parts, each playing a crucial role in their function and accuracy. Here’s an overview of the main parts of a volumetric pipette:

Bulb or Pipette Filler: The bulb, often made of rubber or plastic, is located at the top end of the pipette. It serves as a suction device to draw liquid into the pipette and dispense it accurately. The bulb is squeezed and released to control the aspiration and dispensing of liquid.
Pipette Body: The pipette body is the elongated, cylindrical portion of the instrument. It typically contains volume markings along its length, indicating the calibrated volume that the pipette can dispense accurately. The body may be made of glass or plastic, depending on the application and manufacturer.
Tip: The tip of the volumetric pipette is tapered to allow for precise dispensing of liquid. It is designed to fit into narrow openings, such as test tubes or sample vials, to facilitate accurate transfer of the measured volume. The tip may be fire-polished to ensure smooth and uniform delivery of liquid.
Calibration Mark: This is a single, etched line or mark located near the top of the pipette body. It indicates the calibrated volume of the pipette, which is typically the maximum volume that it can hold. The volume indicated by the calibration mark is known as the nominal volume of the pipette.
Drainage Groove: Some volumetric pipettes feature a small groove or channel near the tip to facilitate complete drainage of the liquid during dispensing. This ensures that the correct volume is delivered without leaving any residual liquid behind.
Identification Markings: Manufacturers often include additional markings or labels on volumetric pipettes for identification purposes. These may include the brand name, model number, capacity, and relevant compliance standards, such as ISO or ASTM specifications.
Certificate of Calibration: High-quality volumetric pipettes come with a certificate of calibration, which provides assurance that the instrument has been tested and calibrated to meet accuracy and precision standards. This certificate may include information such as the date of calibration, the calibration method used, and the traceability of the measurements to national or international standards.
Understanding the various parts of a volumetric pipette at https://monadlabtech.com/ is essential for proper usage, maintenance, and calibration. By following manufacturer instructions and best practices, laboratory technicians can ensure accurate and reliable measurements for their analytical procedures.