Clontech is your one-stop shop for PCR troubleshooting, offering a complete line of high-performance PCR kits and polymerase mixes for every application, including high-fidelity PCR, long PCR, direct PCR, GC-rich PCR, and library construction. Use Clontech’s PCR Troubleshooting Enzyme Selection Guide below to find your match. Click on each enzyme to learn more and place an order.