A microcentrifuge tube is a small, cylindrical container used in laboratory settings for storing, mixing, and centrifuging liquids. Micro centrifuge tubes typically have a volume of 0.2 to 2.0 milliliters and are made of a durable, chemically-resistant material such as polypropylene or polycarbonate.

They are designed to be used in microcentrifuges, small laboratory instruments that spin samples at high speeds to separate components based on their weight. Micro centrifuge tubes have tight-fitting lids that provide an airtight seal and prevent spillage during centrifugation.

They are commonly used in a variety of laboratory applications, including DNA and RNA extraction, cell culture, and protein purification. The small size and versatility of micro centrifuge tubes make them a valuable tool for laboratory research, as they allow for the efficient handling and processing of small samples.