Centrifugal tubes are mainly made of glass, plastic and stainless steel. Commonly used materials for plastic centrifugal tubes are polyethylene (PE), polycarbonate (PC), polypropylene (PP), etc., of which PP tubes have better performance. The advantages of plastic centrifuge tube is transparent (or translucent), hardness is small, available puncture method to remove the gradient. The disadvantages are easy to deform, poor resistance to organic solvent corrosion, short service life.
Stainless steel tube strength, not deformed, can resist heat, frost, chemical corrosion. However, when used should also avoid contact with strong corrosive chemicals, such as strong acid, strong alkali.
Plastic centrifuge tubes have caps, centrifugation before the tube cover must be covered tightly, inverted without leakage. Tube cover has three roles: ① to prevent sample leakage. For radioactive or corrosive samples, this is particularly important. To prevent the sample from evaporating. ③To support the centrifuge tube and prevent it from being deformed. When using glass tubes, the centrifugal force is not too large, and rubber pads are needed to prevent the tube from breaking, and glass tubes are generally not used in high-speed centrifuges.
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