RNAlater RNA Stabilization Reagent. For immediate stabilization of RNA in tissues. Kit contents: Qiagen RNAlater RNA Stabilization Reagent, 250mL, For Immediate RNA Stabilization and Protection, Reliable Gene Expression and Gene-profiling Data, Protects the RNA Expression Pattern of Samples During Harvest and Storage, Preserves RNA for Up to 1 day at 37C, 7 days at 18 to 25C or 4 Weeks at 2 to 8C, Placed at -20C or -80C for Archival Storage, Ideal for Total RNA, miRNA, mRNA Purification. Benefits: Immediate RNA stabilization and protection. Reliable gene expression and gene-profiling data. Convenient and safe handling at room temperature. No need for liquid nitrogen or dry ice. Tissue archiving without risk of RNA degradation