Bst DNA Polymerase, Exonuclease Minus 8,000 U/mL,Bst DNA Polymerase, Exonuclease Minus is available in two concentrations, 8,000 U ml and 50,000 U ml, in a storage buffer of 10 mM Tris HCl, pH 7. 5, 50 mM KCl, 1 mM DTT, 0. 1 mM EDTA, 0. 1% Triton X 100, and 50% Glycerol. Also supplied is 10X DNA Polymerase Buffer B, composed of 200 mM Tris HCl pH 8. 8, 100 mM (NH4)2SO4, 100 mM KCl, 20 mM MgSO4, and 1. 0 % Triton X 100. Bst DNA Polymerase, Exonuclease Minus, is a recombinant form of the 67 kDa