Glass and plastic tubes designed for use in centrifuges; available in a variety of volume capacities, materials, configurations, RCF ratings, and closure types; may be sterile or non-sterile; may have graduations indicating volume on the tube.
Centrifuge tubes are used to contain liquids during centrifugation, which separates the sample into its components by rapidly rotating it around a fixed axis.
Most centrifuge tubes have conical bottoms, which help collect any solid or heavier parts of the sample being centrifuged. Centrifuge tubes must also be able to withstand the centrifugal pressure created during their use, and their specifications may indicate the maximum speed at which they can be safely used.
Centrifuge tubes are available in various styles, sizes, and materials
Capacities: Range from 0.1mL to more than 100mL; the most common sizes are 15mL and 50mL (centrifuge) and 1mL and 2mL (microcentrifuge)
Closures: Screw-on plugged or flat caps; may be attached or separate
Markings: May have writing areas, graduations, or other markings
Shape: Conical- or round-bottomed; if conical, choose skirted free-standing versions
Material: Glass or plastic resin; the latter include polypropylene, polystyrene, PET, and PPCO
Sterility: Sterile or nonsterile; may be heat- or gas-sterilized
Packaging: Bulk or racked tubes
Color: Choose amber or black plastics for light-sensitive samples
Tested to withstand centrifugation of 16,000 RCF in a fully supported rotor with room temperature water. Corning™ Falcon 50mL Conical Centrifuge Tubes are ideal for cell centrifugation; pelleting; separation by density gradients.
Use these tubes for centrifugation up to 2980 RCF. KIMAX™ Conical-Bottom Glass Centrifuge Tubes are plastic shrink-wrapped in modular trays for cleanliness and safety. Manufactured from 51 expansion, low extractable borosilicate glass.
Tested to withstand centrifugation of 12,000 RCF (polypropylene) or 1,800 RCF (polystyrene) in a fully supported rotor with room temperature water. Corning™ Falcon™ 15mL Conical Centrifuge Tubes are ideal for cell centrifugation; pelleting; separation by density gradients.
Features CentriStar™ caps with an easy-on/easy-off flat top and offers advanced ergonomics with wider knurls and roll-over edge design for easier gripping. Corning™ Centrifuge Tubes with CentriStar™ Caps leak-proof design comes with a revolutionary plug feature that virtually eliminates all seepage when used under recommended conditions.
KIMAX™ tube used in the determination of water and sediment in crude mineral oils, fuel oils and petroleum products; of precipitate formed by centrifuging definite quantities of steam cylinder stocks, black oils and lubricating oils; and in testing for acidity of distillation residues or hydrocarbon liquids of gasoline/petroleum solvents.