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Centrifugation technology is mainly used for the separation and preparation of various biological samples. The biological sample suspension is held in a centrifuge tube and rotated at high speed, so that the suspended micro particles settle at a certain speed due to the huge centrifugal force, thus separating them from the solution. Centrifuge tubes, which are one of the necessary experimental consumables for centrifugation tests, vary greatly depending on their quality and performance. So what are the factors we need to pay attention to when choosing centrifuge tubes?
The usual capacity of centrifuge tubes are 1.5mL, 2mL, 10mL, 15mL, 50mL, etc., which are more commonly used is 15mL and 50mL. It should be noted that when using a centrifuge tube, do not fill it up, up to 3/4 of the tube can be filled (Note: when ultracentrifugation, the liquid in the tube must be filled up, because the ultra separation requires high vacuum, only full to avoid deformation of the centrifuge tube). It is also important to ensure that the solution in the tube is not filled too little. This will ensure that the experiment is carried out smoothly.
2. Chemical compatibility
01.Glass centrifuge tubes
When using glass tubes, centrifugal force should not be too large, you need to pad the rubber pad to prevent the tube from breaking.
02.Steel centrifuge tube
Steel centrifuge tube is strong, not deformed, can resist heat, frost and chemical corrosion.
03.Plastic centrifugal tube
Commonly used materials include polypropylene (PP), polyamide (PA), polycarbonate (PC), and polyethylene terephthalate (PET). Among them, the PP polypropylene material centrifuge tube is popular because it can withstand high speed operation, can be autoclaved, and can withstand most organic solutions.
3. Relative centrifugal force
Centrifuge tube has the maximum speed it can withstand. When looking at the operating rate of a centrifuge tube, it is best to look at the RCF (Relative Centrifugal Force) rather than the RPM (Revolutions Per Minute) because the RCF (Relative Centrifugal Force) takes gravity into account. RPM only takes into account the rotor rotation speed.
So, when choosing a tube, calculate the maximum centrifugal force you need in order to find the right tube. If you do not need a high RPM, you can choose a tube with a relatively low centrifugal force to reduce the purchase cost.
Cotaus® Centrifuge tubes are made of high quality imported polypropylene (PP) with high density polyethylene (HDPE) lids and are available in bags or with holders to meet basic experimental requirements and provide good quality to ensure the safety of samples and users. They are suitable for the collection, dispensing and centrifugation of various biological samples such as bacteria, cells, proteins, nucleic acids, etc. They are suitable for a variety of brands of centrifuges.
1. High quality material
Made of high quality polypropylene, super transparent and easy to observe. Can withstand extreme temperature range -80℃-100℃. Can withstand a maximum centrifugal force of 20,000g.
2. Convenient operation
Adopt precision mold, the inner wall is super smooth, the sample is not easy to remain. Leak-proof seal design, screw cap design, can be operated with one hand.
3. Clear marking
Precise scale of mold, high accuracy of marking, wide white writing area, easy for sample marking.
4. Safe and sterile
Aseptic packaging, no DNA enzyme-free, RNA enzyme and pyrogen
Cotaus is a powerful manufacturer of medical biological consumables in China. It currently has a 15,000 ㎡workshop and 80 production lines, with a new 60,000 ㎡factory coming on line at the end of 2023. Every year, Cotaus invests heavily in R&D for new products and product upgrade iterations. We have rich experience in OEM/ODM, especially in high quality and high standard products. Welcome to consult and negotiate.