What is the main characteristic of a volumetric pipet?

The main characteristic of a volumetric pipet is its ability to measure liquid volumes accurately without the need for heating. This type of pipet is specifically designed to deliver a precise volume of liquid, making it essential in laboratory settings where accuracy is critical, such as in titrations or preparing standard solutions.

Volumetric pipets are typically made with a single specific volume in mind, which ensures that they can provide an exact measurement with high precision. The design of these pipets includes a bulb in the middle and a narrow tip, allowing for careful control of the liquid delivered. Because of their specialized use, they are not intended for mixing chemicals or for use in situations where heat would be needed, preserving the integrity of the volumetric measurement. This characteristic sets them apart from other pipets that might serve different purposes in a laboratory.