Quick-Load® Taq 2X Master Mix is an optimized ready-to-use solution containing Taq DNA Polymerase, dNTPs, MgCl2, KCl, tracking dyes and stabilizers. The presence of two commonly used tracking dyes for DNA gels, Orange G and Xylene Cyanol FF, gives the master mix a green color, allowing direct loading of the PCR product onto agarose gels. On a 1% agarose gel in 1X TBE, Xylene Cyanol FF migrates at approximately 4 kb and Orange G migrates at approximately 50 bp. The amount of tracking dyes included does not mask co-migrating DNA bands. Quick-Load Taq 2X Master Mix is ideally suited to routine PCR applications from templates including pure DNA solutions, bacterial colonies, and cDNA products. It can amplify up to 4 kb from complex genomic DNA or up to 5 kb from lambda DNA.