käsipipetti

A käsipipetti, often anglicized as hand pipette or manual pipette, is a common laboratory tool used to measure and transfer small volumes of liquid. It operates by creating a vacuum in a disposable tip, which draws the liquid up into the tip when a plunger is released. The liquid is then dispensed by depressing the plunger again.

These instruments are characterized by their handheld design, making them portable and easy to use. They typically consist of a plunger mechanism, a volume adjustment dial or slider, and a tip ejector. The volume is precisely set by adjusting the dial, and the plunger is used for aspirating and dispensing the liquid. Käsipipetti are designed for single-handed operation, facilitating efficient laboratory workflows.

Different types of käsipipetti exist, varying in their volume ranges and precision. Micro-pipettes are designed for very small volumes, often in the microliter range, while others can handle larger volumes, such as milliliters. The accuracy and precision of a käsipipetti are crucial for experiments in fields like molecular biology, chemistry, and medicine, where precise liquid handling is essential for reliable results. Disposable plastic tips are used to prevent cross-contamination and ensure the integrity of samples.