Matrix Z is an alternative to the very aggressive Matrix A because it's lower shear rate minimizes degradation in applications such as RNA and Protein isolation from very tough tissue. These Lysing Matrix racks are optimized for the FastPrep-96 Instrument and are included in the FastDNA-96 Tissue and Insect DNA Kit, and the FastDNA-96 Plant/Seed DNA Kit. Lysing Matrices are critical components of the Fast Prep Sample Preparation system. MP Biomedical receives the matrix particles from proven vendors and ensures the unprocessed material meets high qualitative standards. Matrix particles are then prepared and dispensed under a rigorous set of proprietary conditions that offer customers a premium product that can be immediately used with confidence. Matrices are available separately for use with your own unique buffers, and are also available as components of the complete purification kits.