What material is centrifuge tube and how to choose the centrifuge tube?

View:681 Time:2022-07-11 11:32:06

A centrifuge tube is an important consumable in any laboratory.
Normally the centrifuge tubes can be divided into two categories: glass centrifuge tubes and plastic centrifuge tubes. It is obviously have different resistance capabilities to different liquid. Most important is taken into account the types of liquid you will be using and ensure that the tube you choose has satisfactory resistance to these chemicals. Centrifuge tubes are available in an array of materials such as polypropylene (PP), polyallomer (PA), polycarbonate (PC) etc. PP is a popular type of tube due to its ability to be used for high speed applications, is autoclavable, and is resistance to most organic solvents. Be sure to check a chemical resistance chart to determine what tube will be most suitable for your laboratory, below is some specification of the centrifuge tube material and suitable liquid.

1. PP (polypropylene): translucent, with good chemical and temperature stability, but will become brittle at low temperature, so do not be below 4 ℃ during centrifugation.
2. PC (polycarbonate): good transparency, high hardness, can be sterilized at high temperature, but not resistant to strong acid and alkali and some organic solvents such as alcohol. Mainly used for ultracentrifugation above 50,000 rpm. 
3.PE (polyethylene): opaque. It does not react with acetone, acetic acid, hydrochloric acid, etc., and is relatively stable, and it is easy to become soft at high temperature.
4.PA (polyamide): This material is a polymer of PP and PE material, translucent, very stable in chemical properties, and not resistant to high temperature.
5.PS (polystyrene): transparent, high hardness, stable to most aqueous solutions, but will be corroded by various organic substances, mostly used for low-speed centrifugation, and generally one-time use.
6. PF (polyfluorine): translucent, can be used at low temperature, if it is an experimental environment at -100-140 ℃, you can use this material centrifuge tube.
7. CAB (Cellulose Acetate Butyl): transparent, can be used for the gradient determination of dilute acids, alkalis, salts, as well as alcohol and sucrose.


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