DNA/RNA Shield Fecal Collection tubes are designed for the collection and preservation of nucleic acids from stool specimens. These fecal collection tubes take a microbial snapshot of a sample while inactivating viruses making samples safe and ready for transport. Samples stored in these fecal collection tubes are stable at ambient temperature, and can be frozen for longer-term storage. Simply collect a spoonful of the specimen into the stool collection tubes prefilled with preservative and shake vigorously to ensure proper stabilization. R1137 is pre-filled with 5 glass beads to help facilitate homogenization.