ENZYME MIX ONLY FAILSAFE 20 KB LGPCR Enzyme Mix, individual component of the FailSafe PreMix Selection Kit for PCR optimization, and the bundled post optimization FailSafe PCR System The PCR Enzyme Mix is a blend of thermostable DNA polymerases containing a 35 proofreading enzyme for high fidelity. Supplied in a 50% glycerol solution containing 50 mM Tris HCl (pH 7. 5), 100 mM NaCl, 0. 1 mM EDTA, 0. 5% Tween20, 0. 5% NP40, and 1 mM dithiothreitol. Choose from 2 different sizes of