FAQ: Does Bst 3.0 DNA Polymerase have an active 3'→5' proofreading exonuclease?

No. If you need a proofreading polymerase we recommend DNA Polymerase I, Large (Klenow) Fragment (NEB# M0210) for lower temperature and strand displacement applications or Q5 DNA polymerase (NEB #M0491) for highest fidelity incorporation and PCR.