Accuris AccuFi HFHS PCR Mix is optimized 2X master mix that includes AccuFi High Fidelity polymerase, a proprietary reaction buffer system, MgCl2, and ultra-pure dNTPs. The engineered polymerase exhibits rapid extension kinetics (~10 s/kb), enabling efficient fast cycling protocols while maintaining high processivity. The formulation supports robust long-range amplification, with reliable performance on templates exceeding 15 kb.