What are the types of centrifuge tubes

By size
A large number of centrifugal pipes (500ml, 250ml)
Ordinary centrifugal pipe (50ml, 15ml)
Micro centrifuge tube (2ml, 1.5ml, 0.65ml, 0.2ml)

According to the bottom shape
Tapered centrifugal pipe, tapered at the bottom, is the most commonly used type of centrifugal pipe
Flat bottom centrifugal pipe
Round bottom centrifugal pipe

According to the closure mode of the cover
Gland centrifuge tube, a compression sealed centrifuge tube, commonly used in microcentrifuge tubes
The spiral cover centrifugal pipe can be divided into flat cover (the top of the cover is flat) and plug cover (the top of the cover has a plug shape)

As per material
Plastic centrifuge tube, glass centrifuge tube, steel centrifuge tube
1. Plastic centrifuge tube
The advantages of plastic centrifuge tube are transparent or translucent, its hardness is small, and the sample can be taken out by puncture method. The disadvantages are easy to deform, poor corrosion resistance to organic solvents and short service life.
The plastic centrifuge tube has a tube cover, which is used to prevent the leakage of the sample, especially for the radioactive or highly corrosive samples. The tube cover also has a function of preventing the sample from volatilizing and supporting the centrifuge tube to prevent the deformation of the centrifuge tube. When selecting this point, we should also pay attention to check whether the pipe cover is tight, and whether it is tight during the test, so as to achieve inversion without leakage;
We all know that polyethylene (PE), polycarbonate (PC), polypropylene (PP) and other materials are commonly used in plastic centrifuge tubes, among which polypropylene PP tubes have relatively good performance. Therefore, we try to consider polypropylene plastic centrifuge tubes when selecting plastic centrifuge tubes.
Plastic centrifugal pipe is generally a disposable experimental device, which is not recommended to be used repeatedly. In order to save money, PP centrifuges can be reused as the case may be, but they need to be thoroughly sterilized by high temperature and high pressure to ensure the scientificity of the experimental results. The centrifugal pipe made of PE cannot be sterilized under high temperature and pressure.
Generally, the centrifugal force that the product can bear or the recommended speed will be indicated in the packaging or instruction of plastic centrifugal pipe. In order to ensure the safety and reliability of the experiment, the centrifugal pipe that meets the speed requirements of the experiment should be selected.
2. Glass centrifuge tube
When using the glass tube, the centrifugal force should not be too large. Rubber pad is needed to prevent the tube from breaking. Generally, the glass tube is not used in high-speed centrifuge. If the cover of centrifuge tube is not well sealed, the liquid cannot be filled (for high-speed centrifuge and angle rotor is used) to prevent overflow and imbalance. The spillover will pollute the rotor and the centrifugal cavity and affect the normal operation of the inductor. During ultracentrifugation, the centrifuge tube must be filled with liquid, because ultracentrifugation needs high vacuum, only when it is filled can the deformation of the centrifuge tube be avoided.
3. Steel centrifugal pipe
The steel centrifugal pipe has the advantages of high strength, no deformation, heat resistance, frost resistance and chemical corrosion resistance. It is also widely used, but it should also avoid contacting with strong corrosive chemicals, such as strong acid, strong alkali, etc. Try to avoid the corrosion of these chemicals.