This product consists of a saliva collector (collection funnel+sample collection tube), a sample collection tube cap, and a preservation solution tube (5ml/10ml) Used for collecting, storing, and transporting free DNA or virus samples from saliva samples at room temperature. Different virus sample preservation solutions can be customized, such as VTM preservation solution (pink), preservation solution containing inactivators (colorless), or physiological saline. DNA preservation solution can stably preserve free DNA for 24 months at room temperature and is suitable for various DNA extraction and purification kits. The collection process is painless and non-invasive, and can be collected at home, making it more convenient and free. The collection funnel is designed with humanization, fits the structure of the human mouth, and is easy to operate. Installation of pipe caps Leak proof gasket and sealing to prevent leakage. No DNA enzyme, no RNA enzyme, no pyrogen Sterilization method: Electronic East sterilization