PrimeSTAR GXL SP is a high-fidelity, robust, hot-start enzyme for use in PCR applications. It contains the same polymerase as our standard PrimeSTAR GXL products, but with a modified, license-free buffer formulation that is suitable for commercial and OEM use, including molecular diagnostic services and kits. This SP product performs similarly to standard PrimeSTAR GXL DNA Polymerase in all tested customer applications. It provides efficient PCR amplification even in challenging situations, such as when working with GC-rich templates, when excess template is present in the reaction, and when amplifying long products up to 30 kb.