A centrifuge tube is a common experimental consumable in the laboratory. It is a tubular sample container with a sealing cap or a gland. The centrifuge tube is mainly used in conjunction with the centrifuge. It uses centrifugal technology to generate a strong centrifugal force when the object is rotated at a high speed, so that the suspended particles placed in the rotating body settle or float, so that some particles can be concentrated or mixed with other particles. purpose of separation.
At present, centrifuge tubes can be divided into plastic centrifuge tubes, glass centrifuge tubes and steel centrifuge tubes according to the material on the market. Different types of centrifuge tubes are suitable for different application scenarios.
plastic centrifuge tube
The advantages of plastic centrifuge tubes are that they are transparent or translucent, have low hardness, and can be used to remove gradients by puncture. The disadvantage is that it is easy to deform, has poor corrosion resistance to organic solvents, and has a short service life. The plastic centrifuge tube can be equipped with a tube cover, which is used to prevent the leakage of the sample, especially when it is used for radioactive or highly corrosive samples. It is very important to prevent the leakage of the sample; Evaporate and support the centrifuge tube to prevent deformation of the centrifuge tube. When choosing this point, you should also pay attention to check whether the tube cover is tight, and whether it can be tightly covered during the test, so as to achieve no leakage when inverted.
glass centrifuge tube
When using glass tubes, the centrifugal force should not be too large, and rubber pads are required to prevent the tubes from breaking. Glass tubes are generally not used in high-speed centrifuges. The cap of the centrifuge tube is not closed well enough, and the liquid cannot be filled (for high-speed centrifuges and using an angle rotor) to prevent overflow and loss of balance. The consequence of spillage is to contaminate the rotor and the centrifugal chamber, affecting the normal operation of the sensor. During ultracentrifugation, the centrifuge tube must be filled with liquid, because high vacuum is required for ultracentrifugation.
steel centrifuge tubes
The steel centrifuge tube has high strength, no deformation, heat resistance, freezing resistance and chemical corrosion resistance. Try to avoid corrosion from these chemicals.
There are plastic and glass centrifuge tubes commonly used in laboratories. Generally, plastic centrifuge tubes are used more, because glass centrifuge tubes cannot be used in high-speed or ultracentrifuges. Plastic centrifuge tubes are also made of PP (polypropylene), PC (polycarbonate), PE (polyethylene) and other materials. The material of PP is translucent and has good chemical and temperature stability. It is also a material that is widely used in laboratories.
