Learn how to use this product The Xtreme RNA isolation kit for 50 Rxns is a quick and easy Silica Based Spin Column Isolation Kit for Saliva and Buccal Samples. It is ideal for rt-qPCR and other downstream RNA applications. Furthermore, the kit is scalable to different sample input volumes and enables the retrieval of maximized results of even the most demanding downstream applications. The Xtreme RNA has been specifically optimized for the RNA extraction of stabilized saliva and buccal swab samples using spin column technology for 50 x 0.5ml stabilized saliva or 50 swabs stabilised in BuccalFix. XMR use an enzymatic method for the disruption of RNAses and is designed for retrieval of high purity and yield RNA. The kit does not contain any toxic phenol, chloroform, β-mercaptoethanol, or guanidine salts.