Pipettes are used to deliver small volumes of liquids reliably and repeatedly. There are different types of pipettes. Unmarked pipettes deliver liquids drop-wise and may not have volume markings. Other pipettes are used to measure and deliver precise volumes. Micropipettes, for example, can deliver liquids with microliter accuracy.
Most pipettes are made of glass, while others are made of plastic. This type of glassware isn’t intended to be exposed to flames or extreme temperatures. Pipettes can be deformed by heat and lose their measurement accuracy under extreme temperatures.