Centrifuge tubes are commonly used experimental consumables in laboratories and are mainly used in conjunction with centrifuges. That is, the experimental liquid is put into it and centrifuged in a centrifuge.
According to the different materials, it can be divided into plastic and glass. Plastic centrifuge tubes are more commonly used, and can also be divided into PP, PC, PS, etc. According to different needs, manufacturers will choose different plastic materials to make.
According to its size, it is divided into 1.5mL, 2mL, 5mL, 10mL, 15mL, 50mL, etc. The domestic centrifuge tubes are generally these specifications, and 10mL and 50mL are used more. If your centrifuge is equipped with 30mL or other size centrifuge tubes, you should consider importing. In addition, centrifuge tubes have round and pointed bottoms, as well as screw caps and stopper caps. Centrifuge tubes with screw caps have a thinner scale and only indicate the total capacity of the cap.
There are two kinds of centrifuge tubes commonly used in laboratories, plastic and glass. Generally, plastic is used more, because glass centrifuge tubes cannot be used in high-speed or ultra-high-speed centrifuges. Plastic centrifuge tubes are made of PP (polypropylene), PC (polycarbonate), PE (polyethylene) and other materials. PP pipe performance is better. The plastic centrifuge tube is transparent or translucent, which can visually see the sample centrifugation, but it is easier to deform, and has poor corrosion resistance to organic solvents, so the service life is short. Therefore, laboratories often purchase centrifuge tubes. Let's introduce each material separately
PP (polypropylene): translucent, with good chemical stability and temperature stability, but will become brittle at low temperature, so it should not be lower than 4 ℃ when centrifuging.
PC (polycarbonate): good transparency, high hardness, can be sterilized at high temperature, but not resistant to some organic solvents such as strong acid, alkali and alcohol. Mainly used for ultracentrifugation above 50,000 rpm.
PE (Polyethylene): Opaque. It does not react with acetone, acetic acid, hydrochloric acid, etc. It is relatively stable and easy to soften at high temperature.
PA (Polyamide): This material is a polymer of PP and PE materials, translucent, very chemically stable, and not resistant to high temperatures.
PS (polystyrene): transparent, high hardness, stable to most aqueous solutions, but will be corroded by various organic substances, mostly used for low-speed centrifugation, generally used once.
PF (polyfluoro): translucent, can be used at low temperature, if the experimental environment is -100℃-140℃, centrifuge tubes of this material can be used.
CAB (Cellulose Acetate Butyl): Transparent, can be used for gradient determination of dilute acids, bases, salts, alcohols and sucrose.
