Two tubes of ROX Reference Dye are supplied separately with Cat. #RR390A/B and RR390L/W. The ROX Dye serves as a convenient internal reference standard when normalizing signals resulting from non-PCR fluorescence fluctuations that occur between wells or over time in different instruments.
Cat.# RR390L/W are larger package sizes (5 mL and 25 mL (5 x 5 mL), respectively) of Premix Ex Taq (Probe qPCR). Each of these items provides convenient larger packaging and is supplied with a single, separate vial of ROX Reference Dye.
Cat.# RR39LR/WR are larger package sizes (5 mL and 25 mL (5 x 5 mL), respectively) that already contain ROX Reference Dye in the Real Time PCR Premix.