SureLight® RPE

Consistency and Reliability at the Best Price

R-phycoerythrin (RPE), the brightest fluorophore used in biomedical research, is a group of red photosynthetic pigments found primarily in red algae. RPE is the most efficient light-harvesting fluorophore in nature.

Columbia Biosciences’ SureLight® RPE has comparable specifications to the top selling RPE products and is therefore easily interchangeable with these products. We guarantee a consistent and stable supply and, due to the efficiencies in our production process, offer highly competitive pricing.

For those companies looking to qualify SureLight RPE, we offer free qualification samples and our expert scientists are on hand to work with your R&D team to make the transition seamless.

Email or call us us for more information


Important Features of SureLight RPE (cat #D42-000)

  • Extremely stable protein
  • Easily linked to antibodies and other proteins
  • High quantum efficiency
  • Large Stokes Shift
  • Primary uses include flow cytometry and Luminex
  • Competitive pricing



SureLight RPE has virtually identical specs as the competition:

  • Molecular weight: 240,000 daltons
  • Purity:
    A566/A280 > 5.50 – 5.60
    A566/A498 < 1.50
    A620/A566 <0.0050
  • Shelf life: Protein is supplied in a 60% ammonium sulfate in 100mM sodium phosphate + 100mM sodium chloride buffer pH 7.0 with 2mM sodium azide and is stable for 12 months when stored properly.


Columbia Biosciences also offers an activated version of RPE (cat #D5-010). If you would like to take advantage of our custom antibody labeling services, please contact us.

For a list of all other RPE products, click here.