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Flow Cytometry Reagents

Gain quantitative single cell insights with flow cytometry and FACS reagents that come with the dependability and quality scientists expect from RayBiotech.

Manufactured in our US-based facility for supply chain reliability and backed by our expert technical support scientists, you can confidently advance a wide range of flow cytometry and FACS projects with RayBiotech.

Browse All Flow Cytometry Reagents
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Bright dyes, quality antibodies, reliable kits

Whether you’re looking for a tagged secondary antibody that can deliver low background binding and high signal-to-noise ratios, an unlabeled primary antibody, a cell viability marker that won’t overlap with your existing panel, or a convenient kit that includes a complete set of reagents, you can find it at RayBiotech.

A focus on quality

At RayBiotech, we understand how variable biology can be and strive for consistency in every product we manufacture. With our flow cytometry reagents, this is reflected in our quality control studies which include using flow cytometry to test every batch instead of faster, simpler western blots. This way we can verify performance in your intended application.

Flow Cytometry Reagent Categories

Flow Cytometry Antibodies
Live/Dead Markers
Intracellular Staining Kits

Flow-Cytometry-Service

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Flow Cytometry Reagents Services

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Basic Flow Cytometry Protocol

Step icon
Cell Preparation

Gently harvest and wash cells, preferably with ice cold (4°C) reagents to preserve cell physiology.

Step icon
Sample Blocking

Incubate suspended cells in a blocking buffer to prevent non-specific binding of primary antibodies

Step icon
Antibody Incubation

Perform primary and secondary antibody incubations with dilutions based on cell concentration.

Step icon
Data Acquisition

Run your sample through the flow cytometer and analyze your data.

Why use RayBiotech flow cytometry antibodies?

  • High quality you can trust
  • Cost effective so you can run more experiments
  • Hard-to-find violet channel antibodies allowing you more flexibility
  • Free trial sizes (5 µg) of any of our RayBright® antibodies so you can try before you buy
  • Custom antibody production for you unique studies (learn more)
  • Custom fluorophore conjugation with limitless possibilities
  • Bulk discounts and long-term supply agreements so you always have what you need

Excitation and emission spectra of RayBright fluorochromes and equivalent dyes

RayBiotech Superior Fluorochromes

Excitation Laser

Max Excitation/Emission

Replacing dyes of equivalent wavelengths

RayBright® UV 450

UV 355

347/448 nm

Alexa Fluor 350

RayBright® Violet 450

Violet 407

403/454 nm

Pacific Blue, Alexa Fluor 450

RayBright® Violet 500

Violet 407

405/537 nm

Alexa Fluor 430, BV510

RayBright® Violet 600

Violet 407

407/600 nm

BD Brilliant Violet 605

RayBright® Violet 655

Violet 407

407/655 nm

BD Brilliant Violet 655

RayBright® Blue 488

Blue 488

491/518 nm

Alexa Fluor 488, FITC, BD BB515

RayBright® Blue/Green 575

Blue 488/Green 561

505/570, 553/570 nm

R-PE, Cy3

RayBright® Green 594

Green 561

594/614 nm

PE-Texas Red, PE-CF594, PE-eFluor610

RayBright® Blue/Green 647 (PE-tandem dye)

Blue 488/Green 561

496/664, 565/664 nm

PE-Cy5

RayBright® Blue/Green 780 (PE-tandem dye)

Blue 488/Green 561

496/780, 565/780 nm

PE-Cy7, PE-Alexa Fluor 750

RayBright® Red 647

Red 640

649/664 nm

APC, Alexa Fluor 647, Cy5

RayBright® Red 700

Red 640

685/710 nm

Alexa Fluor 700, APC-R700

RayBright® Red 780

Red 640

629/780 nm

Alexa Fluor 750, APC-eFluor 780


FAQ

Frequently Asked Questions

Still have questions?

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Antibodies for flow cytometry allow scientists to detect specific antigens and characterize the proteins on the surface of cells. Similar to other immunoassays, antibodies used in flow cytometry can be directly labeled with a fluorescent dye or bind to a secondary antibody carrying the fluorescent marker. The specialized nature of antibodies enables flow cytometry to detect different cell types according to their fluorescent color, each representing an antigen-antibody interaction.

Yes. In fact, discriminating between viable, living cells and non-viable dead cells is crucial for accurate flow cytometry analysis. The presence of dead cells in your samples may cause your antibodies to bind non-specifically, leading to false positives and skewed results. Therefore, when analyzing your results, make sure you distinguish between whole cells and cell debris for accurate results.

Any suspended cell or particle between 0.2 and 150 micrometers can be used for flow cytometry.

The most common samples for flow cytometry include:

  • Non-adherent cells from culture
  • Waterborne microorganisms
  • Bacteria
  • Yeast
  • Bone marrow
  • Peripheral blood with red cells removed by lysis
  • Other body fluids

Still have questions?

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Get comprehensive monoclonal and polyclonal development including peptide antigen design (including phospho peptides), synthesis and carrier protein conjugation, immunization, titer analysis, serum collection or hybridoma fusion, and antibody purification.

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Whether you’re short on analytical resources or expertise, our experienced team can support your studies with a wide range of biostatistics and bioinformatics services.

Related Product Categories

Proteins and Peptides

Whether you need a purified recombinant protein or peptide, overexpressed protein in cell extract or supernatant, a natively produced protein, or related reagents like protease inhibitors, you’ll find a quality product for confident discovery.

Antibodies

Choose from a wide range of pre-conjugated and unlabeled antibodies raised in a wide variety of species—all manufactured to the exacting standards you’ve come to expect from RayBiotech.

Arrays

Discover faster and develop deeper insights with simultaneous profiling of antibodies, proteins, peptides, and more—brought to you by the most experienced company in the business.

ELISA Kits

Analyze and quantify proteins with confidence when you choose our high-quality ELISA kits and validated antibody pairs—manufactured in our own US-based facilities.

What customers are saying

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Dhruba

NIH

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James

Colorado State University

“Kelly was helpful all along with the technique, sample preparation, and data analysis. Although Ray is a commercial company there was no tendency to hide information. The experience was just like collaborating with an academic research lab.”
“I spoke with Brianne on the phone, she was very helpful, knowledgeable, and quick in her response to my technical question. Probably one of the best tech support interactions I've had in biological sciences.”

Illuminate your research and differentiate your cell populations in complex samples with RayBright conjugated antibodies.

Choose a cell viability marker from several different wavelength options to ensure compatibility with the rest of your panel.

Investigate cellular signaling by analyzing cytokine production in individual cells with intracellular staining kits.

Our experienced flow cytometry service team can help you evaluate a wide range of cellular processes, quantify cell populations, and even shed light on intracellular signaling events.

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