Each impact-resistant tube contains 1.4 mm ceramic spheres. CeraLysis is used primarily for lysis of softer tissues like brain, liver, kidney, lung, and spleen. Also used to lyse plant tissue such a leaves, roots, and fruits, as well as cultured cells and whole insects. This grinding matrix is chemically inert and will not bind nucleic acids. Compatible with MP Biomedicals Lysing Matrix D, 500 g.