For multiplex assays that include reporter dyes overlapping the ROX channel (i.e. JUN), we recommend using one of our optimized multiplex master mixes that include the passive reference dye, MUSTANG PURPLE. MUSTANG PURPLE is compatible with QuantStudio 5, 6, 7, and 12K Flex, 7500, 7500 Fast, and ViiA 7 real-time PCR instruments.
While not ideal, we also offer master mixes that contain no passive reference dyes. For selection help for master mixes with no passive reference, please contact Technical Support at techsupport@thermofisher.com.