There are many disposable virus sampling tubes on the market, but the quality is also uneven. Common quality problems include: sample preservation solution leakage, tube cover damage, sample preservation solution discoloration, label detachment, etc. The virus sampling tube is a container for sample storage, and its quality problem directly affects the results of nucleic acid detection. So, what should we pay attention to when choosing a single-use virus sampling tube?
1. Material suitability. According to the implementation guidelines of nucleic acid testing institutions, there are clear requirements for materials, “The cap and tube body should be made of polypropylene material, the screw mouth can be sealed, the sealing performance is moderate, and the gasket is covered inside, which is resistant to freezing. The tube body is transparent and visible, good. Therefore, when filing the record, enterprises should directly choose a virus sampling tube made of polypropylene, with a gasket in the cover, and the cover and the body are sealed in a spiral way. The virus is inactivated at 56°C. Therefore, the virus sampling tube should have the temperature tolerance under the above conditions, will not be deformed and damaged under the test conditions, and can adapt to various inactivation methods. During the development process, The selected materials should be further verified and confirmed.
2. Sealing. The cap and the tube body should be matched together. Try to choose a screw port instead of a plug-in type, so that it is in a completely closed state. Otherwise, it will cause the leakage of the preservation solution and the entry of exogenous substances, which will affect the quality of the product and cause pollution and damage. risk of infection. In the technical indicators, an indicator for testing the tightness of the seal should be set to simulate the tightness of the product under different storage conditions. The general test methods include vibration method, vacuum method, etc.
3. Easy to operate. The wall of the tube should be smooth and flat, the label is complete and firm, the handwriting is clear, the information is easy to write, and the relevant bar code should not fall off the corner. At the same time, the tightness of the bottle cap and the tube body should be moderate and not too tight, so that the sampling and testing personnel can normally open and close the bottle cap with one hand, which improves the operation efficiency.
4. Appropriate specifications. The outer diameter of the virus sampling tube is (14.8 ± 0.2) mm × (100.5 ± 0.4) mm, the outer diameter of the cap is (15.8 ± 0.15) mm, and the height is (12.5 ± 0.5) mm. The company’s filing products should select the best specification and model of the virus sampling tube according to the above requirements, so that the products produced meet the requirements of epidemic prevention.