The advantage of plastic centrifuge tube is transparent or translucent, its hardness is small, and gradient can be taken out by puncture method. Disadvantages are easy deformation, poor corrosion resistance to organic solvents and short service life.
Plastic centrifuge tubes have filler cap, and its function is to prevent sample leakage, especially when used for radioactive or highly corrosive samples, it is very important to prevent sample leakage; another function of filler cap is to prevent sample volatilization, support centrifuge tube and prevent centrifuge tube deformation. When selecting this point, pay attention to check whether the filler cap is tight and whether it can be tightly covered during the test so as to reach inversion without leakage of liquid;