Flow cytometry solutions

Flow cytometry is a powerful and versatile technique for analyzing the physical and chemical characteristics of cells and particles. It allows rapid generation of large quantitative datasets of multiple parameters at the single-cell level. By measuring fluorescent conjugated primary antibodies or probes associated with cells, flow cytometry enables quantification and identification of various cell types and their cellular functions.
In research and clinical settings, flow cytometry is widely used for immunophenotyping, assessing the cellular composition of samples, evaluating cellular function and health, isolating selected cells by sorting, and in biomarker and drug discovery.
Examples of cellular function studies include met-flow, which analyzes the metabolic state of immune cells by investigating the expression of key proteins and rate-limiting enzymes, and phospho-flow, which determines the level of phosphorylation of a protein of interest. Flow cytometry offers unparalleled ease in multi-parameter analysis and enables the investigation of specific cell subsets in samples.
Explore our curated catalog of conjugated and carrier-free antibodies, conjugation and assay kits, and more, to find solutions to support your research.
Fluorescent conjugated primary antibodies
Conjugated antibodies labeled with fluorescent dyes enable direct staining protocols, saving you valuable time by eliminating the need for secondary antibodies. This minimizes potential errors and variability, giving you consistent, reliable results. Additionally, conjugated antibodies enable easy multiplexing in a single step, allowing simultaneous detection of multiple targets within a single sample, which enhances data richness and efficiency. Recently (April 2024), the first 50-color flow cytometry immunophenotyping panel, OMIP-102, was published. Conjugates are key for such a large one-step multiplex panel.
Build your multiplex flow cytometry panel with our flow cytometry antibodies that target both intra- and extracellular targets. We offer unconjugated flow cytometry antibodies, as well as antibodies with: Alexa Fluor®, R-PE, APC, PerCP, and tandem dye-conjugated flow cytometry antibodies. Our range also includes isotype controls and secondary antibodies.
Product highlights
APC Anti-Glucose Transporter GLUT1 antibody [EPR3915]
- The most-cited clone for this target
- Knock-out validated

PE Anti-IDH2 antibody [EPR7577]
- Knock-out validated
- Various fluorochrome conjugates available

Alexa Fluor® 647 Anti-T-bet / Tbx21 antibody [EPR27094-16]
- Available in conjugated formats and carrier-free
- Reacts with human and mouse samples

Carrier-free antibodies
Carrier-free antibodies offer flexibility in conjugation, allowing easy labeling to various labels, like fluorophores, enzymes, or proteins, to meet specific experimental needs. These antibodies are also highly compatible with applications where carrier proteins might interfere, such as functional assays, in vivo studies, or when combined with other proteins or peptides.
Carrier-free antibodies are specifically designed for antibody labeling, saving you time with a simplified protocol. The antibody is added directly to the conjugation reaction, avoiding antibody loss without the need to perform buffer exchange or concentration.
By combining carrier-free antibodies with our Lightning-Link® kits, conjugation has never been easier.
Product highlights
Anti-Acetyl Coenzyme A carboxylase alpha antibody [EPR23235-147] - BSA and Azide free
- Used in a met-flow panel1,2

Anti-STAT3 (phospho Y705) antibody [EPR23968-52] - BSA and Azide free
- Cited in 48 publications
- Knock-out validated

Anti-Ki67 antibody [EPR3610] - BSA and Azide free
- Knock-out validated
- Clone has over 300 citations

References
1. Heieis, G. A. et al. Metabolic heterogeneity of tissue-resident macrophages in homeostasis and during helminth infection. Nature Communications 14, (2023).
2. Pelgrom, L. R. et al. MTORC1 signaling in antigen-presenting cells of the skin restrains CD8+ T cell priming. Cell Reports 40, 111032 (2022).
Conjugation kits
Conjugating primary antibodies can lead to antibody loss and take up valuable lab time. Our innovative Lightning-Link® labeling technology enables the direct labeling of antibodies or proteins without need to purify, providing a straightforward solution to traditional conjugation methods and delivering efficiency from discovery to development.
Our Lightning-Link® conjugation kits are easy to use and allow you to conjugate antibodies in three simple steps to more than 45 labels including fluorescent proteins commonly used in flow cytometry (Alexa Fluor® dyes, tandem dyes, oligonucleotides, metal isotopes).
To generate high-quality conjugates choose from our range of carrier-free antibodies and antibody pairs specifically designed for antibody labeling. We offer 10,000 formulations free from glycerol, BSA, and sodium azide to reduce antibody loss and maximize conjugation efficiency.
Our conjugation kits require just 30 seconds of hands-on time so you can focus on your research. With access to a broad range of labels, from fluorescent dyes and enzymes to metal isotopes, gold nanoparticles, and DNA barcodes, they’re ready to be used with our 13,000 conjugation-ready carrier-free antibodies, giving you the ultimate flexibility to design and complete your experiment.
Product highlights
PE / R-Phycoerythrin Conjugation Kit - Lightning-Link®
- Conjugate your antibody in three easy steps
- Among the brightest dyes for flow cytometry
- Cited in over 100 publications

APC Conjugation Kit - Lightning-Link®
- Fast, simple conjugation
- Among our best-selling conjugation kits
- Cited in over 100 publications

Alexa Fluor® 488 Conjugation Kit (Fast) - Lightning-Link®
- Minimal hands-on time with a simple protocol
- Among our best-selling conjugation kits
- Cited in over 30 publications

Flow cytometry assay kits
Our assay kits provide you with standardized reagents and protocols, ensuring consistency and reproducibility in experiments. Browse our range of cell viability and proliferation assays, mitochondrial potential stains, and dyes for cellular components and discover how they can help you analyze cell health, division, cycle, and metabolic state.
Product highlights
Live/Dead Cell Viability Assay Kit
- Two-color fluorescence method
- Distinguishes live and dead cells via flow cytometry

Reactive Oxygen Species (ROS) Detection Assay Kit
- Simple, quantitative assay
- Real-time measurement of ROS cells by flow cytometry

EdU DNA Synthesis Monitoring Kit Flow Cytometry
- Simple protocol
- Incorporates 5-EdU (a thymidine analog) into newly-synthesized DNA
- Compatible with cell cultures

Other flow cytometry reagents
To further corroborate your results, we offer ancillary products, including permeabilization and fixation buffers, cell lysis buffers, live-dead cell assay kits, fixable cell viability kits and DNA stains.
Product highlights
Annexin V-FITC Apoptosis Staining / Detection Ki
- Ten-minute, one-step staining procedure
- Complete kit with full protocol included
- Cited in over 500 publications

TMRE-Mitochondrial Potential Assay Kit
- Compatible with a flow cytometer, microplate reader or fluorescent microscope
- Cited in over 200 publications
- Convenient kit with control and optimized buffer

Fix & Perm / Cell Fixation & Permeabilization Kit (Flow Cytometry)
- Simple, convenient method
- Enables flow cytometry staining of intracellular markers
