Why is a disposable tip used with a micropipette?

The use of a disposable tip with a micropipette is primarily to prevent contamination between samples. When working with multiple samples, especially in precise scientific measurements and experiments, it is crucial to avoid cross-contamination that could affect the results. Each disposable tip is designed to be used only once, ensuring that any residue from a previous sample does not mix with the new sample being pipetted. This practice not only maintains the integrity of the samples but also upholds the reliability of the experimental data.

While disposable tips can potentially improve accuracy, reduce costs in some contexts, and simplify cleaning processes, their most significant advantage lies in ensuring sample purity and avoiding contamination, making them essential tools in laboratory settings.