The flocking technology of nylon flocked swab The disposable sampling nylon flocked swab is made by vertically spraying nylon fluff on the ABS rod coated with flocking glue by flocking technology. The collected samples can be completely and quickly released into the sample preservation solution for viral nucleic acid detection. The advantages of nylon flocked swab High adsorption: The "adsorption" efficiency of nylon flocked swab is 20%~60% higher than other swabs. Rapid collection: The flocked nylon swab can absorb and collect samples in only 3 seconds to 11 seconds; while the sampling time of cotton swabs is as long as 15 seconds to 120 seconds. High release: A domestic pathogen collection experiment found that the release efficiency of flocked nylon swab to pathogens after collection was almost similar to that of the positive control group without swabs at different dilution concentrations; while the release efficiency of pathogens from cotton swabs after collection was obvious On the low side, and the results are more affected by the dilution concentration.

The components of the Viral Transport Medium include guanidine salt, EDTA, phenol red, buffer solution, etc. The main functions of Viral Transport Medium is to inactivate the virus, crack the protein shell of the virus, and preserve the nucleic acid. Guanidine salt: The most important ingredient in Viral Transport Medium is guanidine salt. Commonly used guanidine salts include guanidine isothiocyanate and guanidine hydrochloride. The guanidine salt can destroy the protein shell on the surface of the virus, release nucleic acid, can be used for nucleic acid detection to confirm whether is infected. The Viral Transport Medium can also inactivate the virus, avoiding the risk of spreading during the sampling, transportation and detection process. EDTA: The second Viral Transport Medium component is EDTA component (Ethylene diamine tetraacetic acid), the main function is to inhibit the degradation of nucleic acid, improve the quality of nucleic acid detection, and ensure the accuracy of subsequent virus amplification. Buffer: The main function of the buffer is to maintain the acidity and alkalinity (pH value) in the tube Phenol red: The acid-base indicator "phenol red" is the reason why the Viral Transport Medium liquid is red. The indicator is red when neutral, purple when the solution becomes alkaline, and yellow when acidic. If the Viral Transport Medium deteriorates, or is contaminated by bacteria, the pH value changes, and it will change from red to yellow. 'Red' indicates that the Viral Transport Medium is within the validity period. At the same time, when the nucleic acid testing personnel add the sample to the colorless sample well, the red color can also allow the testing personnel to observe whether the addition is wrong or whether there is any omission.

In the process of virus sampling, various uncertain factors occur from time to time, affecting the accuracy of nucleic acid detection, especially the cunning omicron virus is highly contagious and highly concealed, and the requirements for detection need to be improved. The quality of Viral Transport Medium kits is critical. The Viral Transport Medium formula independently developed byour research center is based on the general formula, some components have been replaced and improved. On the premise of consistent performance, the cost of the Viral Transport Medium has been significantly reduced. At the same time, a special processing structure in the Viral Transport Medium has been designed  to improve the virus elution rate and help the virus to be released in the Viral Transport Medium. The head of the Universal Viral Transport Swab is designed with flocking, which is highly absorbent, mild and non-irritating, which facilitates the attachment of viruses and increases the amount of virus collection. The Viral Transport Medium is rich in bovine serum albumin, antibiotics, amino acids, inorganic salts and other components, which can maintain the virus activity to the greatest extent.