What is the Difference Between Volumetric and Serological Pipettes?

The key difference between volumetric and serological pipettes lies in their calibration and intended use:

• Volumetric Pipettes are designed for accuracy and precision in delivering a specific volume of liquid. They are calibrated to deliver a certain volume of a solution through free drainage, and the last drop of the solution does not need to be blown out. These pipettes are typically used for titrations, dilutions, and other laboratory procedures that require accurate measurements. They are available in a variety of sizes, ranging from 0.1 mL to 10 mL, and can be made of glass or plastic.
• Serological Pipettes are designed for a greater range of liquid delivery, and are calibrated all the way to the tip, with the last drop of the solution having to be blown out. These pipettes are versatile, featuring multiple graduations, and are used for general liquid transfer. They are more suitable for measuring smaller volumes of liquid compared to volumetric pipettes.

In summary, volumetric pipettes are used for precise and accurate measurements of a specific volume of liquid, while serological pipettes are used for a wider range of liquid delivery applications.

Comparative Table: Volumetric vs Serological Pipettes

Here is a table comparing the differences between volumetric and serological pipettes:

Volumetric pipettes are analytical instruments used for obtaining extremely accurate measurements of the volume of a solution. They have a large bulb, a long narrow portion above it, and are calibrated to deliver a specific volume. Serological pipettes, also known as bulb pipettes or belly pipettes, are designed to measure and transfer solutions accurately in various laboratory settings. They have a long, thin shape and are calibrated all the way to the tip, with the last drop of solution needing to be blown out.