R-Phycoerythrin (R-PE) | High-Purity Fluorescent Label for Flow Cytometry & Immunoassays

Packing size: 10 mg, 50 mg, 100 mg, 500 mg, 1,000 mg  (other sizes available by inquiry)

Shipping: Shipped on blue ice as a suspension in 100 mM Potassium Phosphate buffer, pH 7.0, with 60% saturated (NH₄)₂SO₄, 1 mM EDTA, and 1 mM Sodium Azide.

Storage & Stability: Stable at 2–8°C for ≥ 3 years. Centrifuge before use.
 

Have any questions? Check out our FAQ Section

Why Researchers Choose Flogen® R-PE:

• Extreme brightness: Among the highest quantum yields of any fluorescent label, enabling detection of low-abundance targets in flow cytometry and immunoassays.
• Large Stokes shift: Excitation at 496/565 nm with emission at 578 nm minimizes spectral overlap in multi-color panel designs.
• Broad laser compatibility: Efficiently excited by standard 488 nm argon-ion and 532 nm solid-state lasers.
• Bioconjugation-ready: Easily conjugated to antibodies, streptavidin, and other proteins via SMCC chemistry or standard crosslinkers; see also our Lyo SMCC-RPE and SAPE products.
• 3-year shelf life: Exceptional stability at 2–8°C reduces waste and supports bulk procurement.
• Highly water-soluble: No organic solvents required; directly compatible with aqueous assay buffers.
• Large-scale manufacturing: Consistent lot-to-lot quality backed by COA; OEM and bulk supply available.

R-PE is used in:

• Flow cytometry (single-color and multi-color panels)
• Fluorescence ELISA and lateral flow immunoassays
• Immunohistochemistry (IHC) and immunocytochemistry (ICC)
• FRET-based biosensors and tandem conjugate systems (e.g., PE-Cy5, PE-Cy7)
• Antibody and streptavidin conjugate manufacturing
• Multiplex bead-based assays (e.g., Luminex)