Which pipet is described as the most used transfer pipet in the laboratory?

• A. Pasteur Pipet
• B. Mohr Pipet
• C. Serologic Pipet
• D. Ostwald-Folin Pipet

Answer: (A)

Transfer pipets are simple tools used to move liquids from one container to another without aiming for a precise volume. The Pasteur pipet is the most commonly used because it’s plain glass (or plastic), has no graduation marks, and works with a bulb to draw up and release liquid quickly. This makes it versatile, inexpensive, and easy for everyday transfers, even when exact amounts aren’t required.

Other pipets with measurement marks (like those designed to deliver known volumes) are used when accuracy matters, which is why they’re less about quick transfers and more about quantitative work. The Ostwald-Folin pipet is a more specialized, precise instrument for certain tasks, and the Mohr and Serologic types are designed to deliver specific volumes with graduation scales, making them less suited for routine transfer compared to the Pasteur type.