Ultra-bright antibodies for high-sensitivity assays.
More signal. Higher sensitivity. Faster assays.
Ultra Beacons pack over 100 labels into a single antibody probe - delivering up to 100x brighter signals with low background. They seamlessly integrate into existing assays, including flow cytometry, immunoassays, and spatial biology.
Products and Services
Improve the detection of low-abundance antigens with the UB Flow Core Kit, a signal amplification kit for flow cytometry. Ultra Beacon reagents deliver a 10-30-fold higher staining index than conventional fluorophore-conjugated streptavidin or secondary antibodies*, helping distinguish weak staining from background.
The kit includes Ultra Beacon reagents and a dedicated blocking solution, with a simple staining protocol. Choose AF488, AF647, or Cy3B (PE alternative), with streptavidin or polyclonal anti-mouse, anti-human, or anti-rabbit IgG (H+L) binders.
For additional amplification, combine the Core Kit with a compatible UB Flow Booster Kit.
Download the UB Flow Core Kit staining protocol.
*Performance varies by assay and product configuration. Comparisons refer to the corresponding conventional fluorescent detection reagent.
For Research Use Only. Not for use in diagnostic procedures.
Add further signal amplification to your flow cytometry assay with the UB Flow Booster Kit. Designed for use with the UB Flow Core Kit, it increases staining index a further 5-fold with one additional staining step. Together, Core and Booster provide a 50–150-fold higher staining index than conventional fluorophore-conjugated streptavidin or secondary antibodies.*
The Booster Pack extends the Core workflow for assays requiring improved detection of low-abundance antigens. Available in AF488, AF647, and Cy3B (PE alternative).
Requires a compatible UB Flow Core Kit. Not for standalone use. Also available as UB Flow Core + Booster Bundle.
Download the UB Flow Booster Kit staining protocol.
*Performance varies by assay and product configuration. Comparisons refer to the corresponding conventional fluorescent detection reagent.
For Research Use Only. Not for use in diagnostic procedures.
Maximum signal amplification in one package.
The Core + Booster Bundle combines both signal amplification steps for demanding flow cytometry applications - ideal for low-abundance targets, challenging antibodies, and experiments where maximum population separation is the goal.
Combine antigen detection and additional signal amplification with the UB Flow Core + Booster Bundle. This flow cytometry bundle pairs the Core Kit with a compatible Booster Kit to deliver a 50–150-fold higher staining index than conventional fluorophore-conjugated streptavidin or secondary antibodies.*
The bundle includes Core reagents, Booster reagents, and a dedicated blocking solution. Follow the simple Core staining protocol, then add one Booster step to further improve detection of low-abundance antigens.
Choose AF488, AF647, or Cy3B (PE alternative), with streptavidin or polyclonal anti-mouse, anti-human, or anti-rabbit IgG (H+L) binders.
Download the UB Flow Booster Kit staining protocol.
*Performance varies by assay and product configuration. Comparisons refer to the corresponding conventional fluorescent detection reagent.
For Research Use Only. Not for use in diagnostic procedures.
Custom Ultra Beacons
Broad label compatibility
Fluorescent dyes
Enzymatic labels (e.g. HRP)
Gold nanoparticles
DNA barcodes
and more
Broad assay compatibility
Immunoassays
Flow Cytometry
Spatial Biology
qPCR
and more