Taqman Master Mix-ROX is designed specifically for TaqMan probe-based real-time PCR analysis of DNA samples. Taqman 2X QPCR Master Mix is designed for high throughput quantitative PCR using TaqMan® probe-based chemistry. Available with the option of ROX or fluorescein as the internal passive reference dye, BioVision's TaqProbe 2X QPCR Master Mix offers superb performance in sensitivity and signal-to-noise ratio. The multiplex formulation supports quantitative amplification and detection of up to four targets simultaneously with consistent and reliable results. Due to variations in QPCR instrument performance, we offer different Taqman QPCR Master Mix formulations optimized for different machines. Please use QPCR Mix that will be most compatible with your choice of a particular instrument/model. Taqman 2X QPCR Master Mix-ROX (Cat# M1124-500) is compatible with ABI® 7000, 7300, 7700, 7900, 7900HT, StepOnePlus™, StepOne™, OpenArray, PRISM™ Sequencing Detection Series QPCR instruments.