ROX Passive Reference Dye


Many real-time PCR thermal cyclers require an internal ROX reference dye for fluorescent signal normalization and correction of well-to-well optical variations. Bio-Rad's ROX Passive Reference Dye allows PCR reagents that do not contain ROX to be used on all ROX-dependent real-time PCR systems.

As the excitation optics of different instrument platforms vary, the optimal ROX reference dye concentration must be matched to each real-time PCR cycler. This ROX reference dye is formulated as a 50x concentrated stock solution for use on the following instruments:

  • ABI PRISM 7000, 7300, 7700, and 7900 systems

This ROX reference dye should be treated as a 750x concentrated solution for systems that use 580–585 nm excitation for passive reference dye, such as the following instruments:

  • Stratagene Mx4000, Mx3000P, or Mx3005P systems
  • ABI PRISM 7500 sequence detection system

Note: An internal ROX reference dye is not required for use with any Bio-Rad real-time PCR detection system.

Storage at –20°C Guaranteed for 12 months at –20°C in a constant temperature freezer (multiple freeze thaws not recommended)
Storage at +4°C Guaranteed for 6 months at 4°C (protected from light)

Account price failed to display. Please try reloading the page. Reload Page

If you are placing an order, you may proceed with your order; the account price will be applied if it is lower than the
list price. If the problem persists, please call customer service at   or send an
email to 

ROX Passive Reference Dye, 0.5 ml

0.5 ml, passive reference dye for use on ROX-dependent real-time PCR instruments

List Price:
Your Price:

Communication error

Reload Page

Your Price:   Log in
Quantity:   Add to cart
Add to Hot List   Add to Quote
Number Description Options
6252 Reagent Comparison Guide for Real-Time PCR Brochure, Rev C Click to download [ Add to Cart (Free) ]
6090 Amplification Reagents and Plastics Brochure, Rev E Click to download [ Add to Cart (Free) ]
10002317 Instruction Manual, ROX Passive Reference Dye, Rev B Click to download