Ultra Pure Grade Purity: 99.95% min. Buffering pH range 7.0-9.0 pKa at 25°C = 8.1 Excellent biochemical and biological buffer for all applications where ultra high purity is required. MP offers a complete selection of Biological Buffers including: BES, BICINE, BIS-TRIS, HEPES, MOPS, PIPES, And many more... |