Bio-Rad introduces StarBright Violet 515 Dye for flow cytometry

New dye offers researchers improved brightness to resolve rare and low antigen density populations more easily

13 Sept 2020
Tom Casburn
Associate Editor

Product news

Bio-Rad Laboratories, Inc., a global leader of life science research and clinical diagnostic products, today announced the launch of StarBright Violet 515 (SBV515) Dye, the first of a new range of unique fluorescent nanoparticles, for use in flow cytometry. StarBright Dyes are conjugated to a growing range of antibodies and are compatible with most flow cytometers and experimental protocols.

The StarBright Violet 515 Dye with an excitation maximum at 401 nanometer and emission maximum of 516 nanometer offers researchers improved brightness to resolve rare and low antigen density populations more easily. It has a narrow emission profile to reduce spillover into neighboring filters and minimal excitation by other lasers, making it suitable for inclusion in multicolor panels.

The dye is not susceptible to photobleaching, delivers high lot-to-lot reproducibility, and is stable at 4°C with no loss of signal to help ensure consistent staining and deliver reliable results. It has been tested in many common staining buffers and there is no requirement to use a special staining buffer, permitting easy integration into common experimental protocols without compromising performance. StarBright Violet 515 Dye is compatible with Bio-Rad’s ZE5 Cell Analyzer, S3e Cell Sorter, as well as other cytometers, and it is suitable for both conventional and spectral flow.

“StarBright Violet 515 Dye is brighter than other common dyes that emit at similar wavelengths,” said Mike Blundell, Bio-Rad Product Manager, Life Science Group. “The dye is flexible enough to fit into any flow cytometry panel, allowing researchers to multiplex with ease regardless of flow cytometer and experimental protocol, and it offers a superior alternative for fluorophores that have emission maxima between 500 and 550 nanometers.”

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AntibodiesAntibodies are used in techniques such as confocal and fluorescence microscopy, flow cytometry, ELISA, ELISPOT, immunohistochemistry, western blotting and immunopreciptation. Select specific antigen reactivity, high specific affinity, low non-specific binding, monoclonal or polyclonal, primary or secondary antibodies and associated conjugates such as an enzyme or dye for visualization.Flow Cytometry / Cell CountingFlow cytometers are used to count, sort and examine multiple characteristics of cells. Other cell analysis equipment includes image cytometers, cell counters, fluorescence-activated cell sorters (FACS), magnetic-activated cell sorters (MACS), and a range of flow cytometry assay kits. Flow cytometers can reveal information on cell viability, cell proliferation, apoptosis and cell cycle progression, as well as identify cell populations and intracellular or cell-surface molecules. Additionally, some flow cytometers, known as FACS, have an additional sorting function after analysis. Cell counters and image cytometers count live and dead cell populations and can also conduct cell proliferation assays. Find the best flow cytometers, cell counters and cell sorters in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Fluorescence Based AssayFluorescence based assays are widely used in life science research and high-throughput screening to measure a broad range of cellular activities.Dyes
Bio-Rad introduces StarBright Violet 515 Dye for flow cytometry