Viral Transfer Systems (VTM-RT) typically have the following characteristics:

Sample preservation and stability
Maintaining viral activity: The preservation solution in VTM-RT contains nutrients required for viral survival, such as salts, proteins, glucose, etc., which can provide a suitable environment for viruses to survive and maximise viral activity, which is conducive to the subsequent detection, culture and isolation of viruses.
Preventing nucleic acid degradation: Nuclease inhibitors are added to inhibit the activity of nuclease, reducing the degradation of viral nucleic acid and ensuring the integrity of viral nucleic acid, thus improving the accuracy of the test.
Resistant to storage and transport: Samples can usually be stored and transported within 48 hours under refrigeration (2-8°C), or for a long period of time under -80°C or liquid nitrogen, or for a short period of time under ambient temperature, which provides flexibility in the collection, transport and storage of samples, and ensures the stability of the samples under different conditions.
Safety
Virus inactivation: Some VTM-RTs are equipped with an inactivating preservative, which rapidly inactivates viruses in the sample, rendering the sample non-infectious and eliminating biosafety hazards, ensuring the safety of healthcare workers and testers, and is particularly suited to the sampling and transport of highly pathogenic viruses.
Preventing leakage: virus sampling tubes and caps are usually made of polypropylene and other materials with good sealing and stability, and are not easy to deform and leak under high temperature and pressure, low temperature, centrifugation, shock and other conditions, which avoids the risk of leakage of samples in the process of storage and transport, and prevents the spread of viruses.
Sampling and Operation Convenience
Matching high-quality swabs: Generally matched with flocked swabs, which are non-toxic to microorganisms and viruses, do not contain RNA or DNA enzymes to avoid contamination and degradation of the samples, and can absorb and release samples quickly to maximise the amount of viral samples collected and ensure the accuracy of the PCR results, and the swabs are designed with an easy-to-break rod, which is free of debris when broken, making it easy to operate and use.
One-handed operation: The virus sampling tube is designed for easy one-handed operation, which improves the sampling efficiency, especially in some special scenarios or when rapid sampling is required.
Multiple sizes available: Single, 5-mix-1, 10-mix-1, 20-mix-1 and other sampling sizes are available, which can be flexibly selected according to different testing needs and scenarios to improve screening efficiency.

Compatibility and versatility
Compatible with a wide range of testing methods: Suitable for a variety of applications, including classical cell culture methods, diagnostic tests and molecular biology techniques (e.g. PCR, etc.), it is compatible with different testing methods and instruments, and can satisfy the needs of clinical diagnosis, epidemic monitoring, scientific research and other aspects.
Wide range of sample applicability: It can be used to collect and transport a wide range of viral samples, such as influenza virus, avian influenza virus, neo-coronavirus, hand-foot-mouth virus, measles-rubella virus, norovirus, rotavirus, etc., as well as samples of pathogens such as chlamydia, mycoplasma, and mycoplasma urealyticum, etc., which is of wide versatility.
Conformity with standards and norms: Its production and use usually conform to relevant national standards and quality management system requirements, such as ISO 13485, etc., to ensure the quality and reliable performance of the product, which can be widely used in different laboratories and testing organisations.