Jackson Immuno Research Inc.
specializing in secondary antibodies and conjugates

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Fluorescent Dyes

Brilliant Violet™
421 & 480

  • Combine with AF488, RR-X, & AF647 for 5-color imaging
  • Compatible with commonly used filter sets
  • Switch nuclear stain from DAPI to DRAQ5™ for additional labeling options

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Customer Reviews

What Do Scientists Say About Our Secondary Antibodies?

"I have used a wide variety of secondaries and Jackson ImmunoResearch has consistently been the best. The fluorophores are bright and stable and their selective (x reactivity removed) secondaries have always shown species specificity in multiple labeling."

Janet Duerr, Ohio University

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Whole IgG Affinity-Purified Secondary Antibodies

"Without question, I can always turn to Jackson ImmunoResearch secondary antibodies for ECL detection of any primary antibody! They produce great signal at low dilutions, last for years even through bad laboratory practice like repeatedly using the same tube every time, and come in a variety of species flavors."

W Thompson, OSHU

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Suggested Dilution Factors

Technical Service e-mail
tech@jacksonimmuno.com

TechFAQ #5

What are the suggested dilution factors to be used for Jackson ImmunoResearch products?

The dilution factors suggested in the following table are presented in the form of a range because the optimal dilution is a function of many factors, such as antigen density, permeability, etc. The actual dilution used must be determined empirically. Dilutions outside these ranges may be required occasionally, and should be determined based on actual circumstances.


Product ELISA Western
Blots
Histo-/
Cyto-Chemistry
Flow
Cytometry
Unconjugated whole IgG and F(ab') 2 secondary antibodies
10-20 µg / ml
Unconjugated Fab secondary antibodies
20-40 µg / ml
Most Alexa Fluor®, DyLight, and Cy3 Conjugates [IgG, F(ab') 2, Fab] 1:100-
1:800
1:100-
1:800
Alexa Fluor® 680 and 790 Conjugates 1:50,000-200,000
AMCA, Cy2, FITC, TRITC, RRX, and Texas Red Conjugates
[IgG, F(ab') 2, Fab]
1:50-
1:200
1:50-
1:200
Cy5 Conjugates [IgG, F(ab') 2, Fab] 1:100-
1:400
1:100-
1:400
Phycoerythrin and Allophycocyanin Conjugates [IgG, F(ab') 2, Streptavidin] 1:50-
1:200
PerCP Conjugates
[IgG, F(ab') 2, Streptavidin]
1:25-
1:100
Horseradish Peroxidase Conjugates
[IgG, F(ab') 2]
1:5,000-
1:100,000
1:5,000-
1:100,000
(non-ECL)
1:10,000-
1:200,000
(ECL)
1:500-
1:5,000
Alkaline Phosphatase Conjugates
[IgG, F(ab') 2]
1:5,000-
1:50,000
1:5,000-
1:50,000
Biotin-SP Conjugates [IgG, F(ab') 2]
(using Fluorophore-Conjugated Streptavidin)
    1:200-
1:1,000
1:200
1:1,000
Biotin-Sp Conjugates [IgG, F(ab') 2]
(using enzyme-Conjugated Streptavidin)
1:20,000-
1:400,000
1:20,000-
1:400,000
1:500-
1:5,000
Horseradish Peroxidase-Conjugated Streptavidin 1-2 µg / ml 0.01-0.1
µg / ml
1-2 µg / ml  
Alkaline Phosphatase-Conjugated Streptavidin 1-2 µg / ml 0.1-1µg / ml 1-2 µg / ml
All Alexa Fluor®-, DyLight 405-, and Cy3-Conjugated Streptavidin 0.5-2 µg / ml 0.5-2 µg / ml
Cy5-Conjugated Streptavidin 0.5-2 µg / ml 0.5-2 µg / ml
All Other Fluorophore-Conjugated Streptavidin 2-5 µg / ml 2-5 µg / ml
4 nm Gold-Antibody Complexes 1:20-1:200
18 nm Gold-Antibody Complexes 1:10-1:20
6, 12 nm Gold-Antibody Complexes 1:20-1:40
Peroxidase-Anti-Peroxidase (PAP) 25-50 µg / ml