Saliva DNA Preserve Tube contains asafe saliva DNA protective agent. It can rapidly cleave salivary cells,inactivate nuclease and protect DNA from degradation. Saliva sample can bestored at room temperature (25°C) for more than 6 months or - 20°C / - 80°C forlong time by simply soaking in the reagent. Saliva DNA Preserve Tube issuitable for storing 2ml saliva samples.