Centrifuge Tubes are a common laboratory consumable use in a laboratory. It is used to hold experimental liquids and then placed inside the centrifuge for centrifugation. What are the differences between centrifugal tubes? Let's talk in detail below.

Divide From Material

Centrifuge tubes are divided into plastic and glass. Plastic centrifuge tubes are used more because glass can not be used in high-speed or ultra-high speed centrifuges. Plastic centrifuge tubes are available in materials such as PP (polypropylene), PC (polycarbonate), PE (polyethylene), and other materials. The plastic centrifuge tube is transparent or translucent, which can directly see the centrifugation of the sample, but it is easy to deform and has poor corrosion resistance, so its service life is short.

Characteristics of Different Materials：

• PP (polypropylene): translucent, with good chemical and temperature stability. However, it will become brittle at low temperatures. So please use it below 4 ℃ during centrifugation.
• PC (polycarbonate): it has good transparency and high hardness. It can withstand high-temperature disinfection, but it is not resistant to strong acid, strong alkali, and some organic solvents such as alcohol. It is mainly used for ultra-high speed centrifugation with more than 50000rpm.
• PE (polyethylene): opaque. It does not react with acetone, acetic acid, hydrochloric acid, etc. PE is relatively stable and easy to soften at high temperatures.
• PA (polyamide): this material is a polymer made of PP and PE. It is translucent, has very stable chemical properties, but is not resistant to high temperatures.
• PS (polystyrene): transparent, high hardness, stable to most aqueous solutions, but will be corroded by a variety of organic substances. It is mostly used for low-speed centrifugation and is generally disposable.
• PF (polyfluoride): translucent and can be used at low temperatures. You can choose PF centrifuge tubes if your experimental environment is at - 100 ℃ - 140 ℃.
• CAB (butyl acetate cellulose): transparent. You can use CAB centrifuge tubes for gradient determination of dilute acids, bases, salts, alcohol, and sucrose.

Divide From Capacity

Centrifuge tubes are usually 1.5ml, 2ml, 5ml, 10ml, 15ml, 50ml, etc. Commonly, we use 10ml and 50ml.

Divide From Tube Bottom

Centrifuge tubes can be found in the round bottom, conical bottom, and flat bottom, and with a screw cap or plug seal cap. The centrifuge tube of the screw cap has a fine scale, and the plug seal cap has only an overall capacity mark.

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