What are the common sizes of a graduated pipet?

The correct choice reflects commonly utilized sizes of graduated pipets in laboratory settings, particularly those used for measuring and transferring liquids in biological and chemical experiments. Graduated pipets are designed for accuracy, and the sizes of 10mL and 25mL are standard for various applications, including replicating solutions and conducting quantitative analyses.

These volumes allow for a good range of fluid handling, making them suitable for both small and moderately large volumes. The 10mL pipet is often used for precise measurement of smaller quantities, while the 25mL pipet accommodates larger volumes without the need to use multiple smaller pipets, thus enhancing efficiency in experimental procedures.

In contrast, the other choices may include sizes less commonly used in standard laboratory practices. While they could still be used in specific research contexts, pipets of 10mL and 25mL are generally regarded as standard and versatile tools, widely available and routinely employed across various biological and chemical laboratories.