Experimental tube selection

In scientific research and laboratory work, reliable handling and long-term storage of samples are crucial. Plastic centrifuge tubes and plastic cryovial tubes are two key consumables commonly used in laboratories. They play a key role in sample separation and preservation.

In terms of material properties, plastic centrifuge tubes: usually made of materials with good chemical stability such as polypropylene (PP) or polyester (PC), can withstand most common chemical reagents. plastic cryovial tubes: In addition to PP and PC, they are also made of polyethylene (PE) and other materials, and their tolerance to chemical reagents is slightly lower than centrifuge tubes.

In terms of temperature tolerance, plastic centrifuge tubes can generally withstand a temperature range of -20°C to 121°C. This wide temperature adaptability enables it to meet various experimental needs. plastic cryovial tubes can withstand a wide temperature range from -196°C (liquid nitrogen temperature) to 121°C, making them suitable for long-term cryogenic storage. This allows it to play a key role in the long-term preservation of biological samples, cell lines, proteins, etc.

In terms of mechanical strength, plastic centrifuge tubes can withstand centrifugal forces up to 20,000 × g, ensuring the safety of samples during high-speed centrifugation. This makes it widely used in centrifugation experiments such as protein separation, cell fractionation, and DNA extraction.

Plastic cryovial tubes also have high mechanical strength and can withstand the pressure of centrifugation and cryogenic storage.In terms of sterility, the production of plastic centrifuge tubes is usually carried out in a clean workshop environment and adopts strict aseptic operating procedures. γ-ray or EtO gas sterilization will be performed before leaving the factory to ensure sterility. High-end plastic centrifuge tube products usually obtain sterility level certifications such as ISO 11137 or USP<71>; the production of plastic cryovial tubes is also carried out in a clean workshop environment, and the sterilization process uses gamma rays or EtO gas sterilization to ensure sterility. . High-end plastic freezing tube products will also obtain corresponding sterility level certification.

In terms of capacity specifications, the common capacity specifications of plastic centrifuge tubes are 0.5 mL, 1.5 mL, 2 mL, 5 mL, 15 mL, 50 mL, etc. Applicable scenarios include 0.5-2 mL specifications for micro-volume sample processing, and 15-50 mL specifications for larger volume samples. There are also some centrifuge tubes with special capacities, such as 0.2 mL, 4 mL, etc., to meet special experimental needs; the common capacity specifications of plastic cryovials are 0.5 mL, 1 mL, 2 mL, 5 mL, 10 mL, 15 mL, and 50 mL. wait. The applicable scenarios are mostly 0.52 mL specification for cryopreservation of trace samples, and 5-50 mL specification for larger volume samples. Special capacity cryovials are mostly 03 mL, 4 mL, etc,to meet special experimental needs. In terms of economics, the raw material cost of plastic centrifuge tubes is relatively low, the manufacturing process is relatively simple, and the overall price is relatively affordable. If the laboratory purchases plastic centrifuge tubes in bulk, it can usually get a larger price discount; plastic cryovial tubes need to be more With high low temperature resistance, its unit price is usually slightly higher than ordinary plastic centrifuge tubes.

Plastic centrifuge tubes and plastic cryovial tubes are two key consumables commonly used in laboratories and play an important role in sample separation and storage. By comparing the material properties, temperature tolerance, mechanical strength and other aspects of these two products, we can fully understand their characteristics and applicable scenarios, and provide a reference for scientific researchers to choose appropriate experimental consumables. Only by choosing high-quality plastic consumables that meet experimental requirements can the reliability of sample processing and storage be ensured, thereby improving the accuracy and repeatability of experimental results.