Which of the following is NOT a type of graduated glassware?

Graduated glassware is specifically designed with measurement markings to provide accurate volume readings. Beakers and graduated cylinders are types of graduated glassware that clearly indicate volume levels, allowing for precise measurement of liquids.

Erlenmeyer flasks, while useful in laboratory settings, do not have markings that allow for precise measurement of liquid volumes; they are more suited for mixing or holding liquids rather than measuring.

Pipets are indeed types of graduated glassware, as they have graduated markings that enable accurate dispensing of small volumes of liquids.

In contrast, the option identified as the correct answer may refer to an absence of these measurement markings. Pipets are specifically designed for transferring exact volumes of liquid rather than for general measuring, making them distinct from other types of graduated glassware. Thus, the choice highlights that pipets serve a different purpose despite having graduated markings for precise volume measurements.