SSC Buffer, 20X, Molecular Grade (pH 7.0), is commonly used in nucleic acid hybridization techniques at concentrations from 0.1X to 20X, depending on the application. Quality Tested: Each lot of SSC Buffer is tested and certified to be free of DNase, RNase and protease activity. Composition: 3M NaCl, 0.3M sodium citrate (for 20X concentration).