Transfer pipettes, also known as dropper pipettes, are versatile laboratory tools used for the precise transfer of small volumes of liquid. These pipettes are typically made from plastic, such as polyethylene, which offers flexibility, chemical resistance, and affordability. They come in various sizes, usually ranging from 1 mL to 10 mL, to accommodate different volumes of liquid transfer. The design of a transfer pipette includes a slender tube that narrows to a small opening at the tip, with an integrated bulb at the opposite end. This bulb is squeezed to create a vacuum that draws liquid into the tube, allowing for controlled release when the bulb is gradually released. Transfer pipettes are widely used in various laboratory settings, including biology, chemistry, and medical labs, due to their simplicity and ease of use. They are ideal for applications where precision is less critical, such as adding reagents, transferring samples between containers, or dispensing liquids onto slides for microscopic examination. These pipettes are often disposable, which helps to prevent cross-contamination and ensures sterility, especially in clinical and microbiological applications. Additionally, some transfer pipettes are calibrated to deliver specific volumes, enhancing their utility in quantitative procedures. Their disposable nature also eliminates the need for cleaning and autoclaving, saving time and resources in busy lab environments. Overall, transfer pipettes are indispensable tools for any laboratory, offering convenience, reliability, and versatility in liquid handling tasks.
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