Centrifuge tubes have several distinct characteristics:
Material: They are made of glass (often borosilicate glass for thermal and chemical resistance).
Bottom Shape: They come in conical bottoms (to promote pellet sedimentation) or round bottoms (for general applications).
Graduations: These tubes are graduated to allow precise volume measurement, while others are not. The graduations are in milliliters (ml).
Caps/Closures: They are equipped with screw caps for a tight seal, or plain necks without caps.
Strength: Centrifuge tubes are designed to withstand high centrifugal forces (expressed as RCF or xg).
Sterility: They can be supplied sterile, particularly for cell culture.
Volume: They are available in a range of sizes, typically from a few milliliters to 50 ml or more.
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