Catalog  |  Cart  |  Log In


Technical Reference

ABSORBANCE, EXCITATION AND EMISSION INFORMATION FOR FLUORESCENT & SPECTROPHOTOMETRIC ASSAYS

 

Fluorescent & Spectrophotometric Assays

These are the recommended wavelengths of these products. The recommended wavelengths may differ from the wavelengths that will give the maximum absorbance, excitation and/or emission.

Product (Compound) Absorbance (nm) Excitation/
Emission
(nm)
Apo-ONE® System (rhodamine 110) 485/530
AttoPhos® System (2'-[2-benzothiazoyl]-6'-hydroxybenzothiazole; BBT) 435/555
β-Galactosidase Enzyme Assay System (o-nitrophenol) 420
CaspACE™ Assay System, Colorimetric (p-nitroaniline; pNA) 405
CaspACE™ Assay System, Fluorometric (7-amino-4-methyl coumarin; AMC) 360/460
CellTiter 96® Assay (MTT formazan product) 570
CellTiter 96® AQueous Assay (MTS formazan product) 490
CellTiter 96® AQueous One Solution Assay (MTS formazan product) 490
CellTiter-Blue® Assay (resorufin) 570(1) 560/590
ChipShot™ Labeling and Clean-Up System:    
  • Cy®3
550 550/570
  • Cy®5
650 650/670
CytoTox 96® Assay (formazan product) 490
CytoTox-Fluor™ Assay 485/520
CytoTox-ONE™ Assay (resorufin) 570 (1) 560/590
DAPI (nucleic acid stain) 360/460
DeadEnd™ Fluorometric TUNEL System (fluorescein) 494/520
Emax® ImmunoAssay Systems (3,3', 5,5'-tetramethylbenzidine; TMB) 450
FluoroTect™ GreenLys tRNA (BODIPY®-FL) 502/510
Greiss Reagent (azo compound) 520-550
HaloTag® diAcFAM Ligand (after hydrolysis) 494/562
HaloTag® TMR Ligand 555/585
HaloTag® Coumarin Ligand 353/442
Hemoglobin (present in rabbit reticulocyte lysates) 300–600
Monster Green® Fluorescent Protein (hMGFP) 480/540
MultiTox-Fluor Assay 400/505
and 485/520
Nucleic acids 260
PepTag™ peptides 570 540/592
Phosphatase assay (molybdate dye) 600 or 630
Polysaccharides
(potential contaminant in DNA preparations)
230
PowerPlex® Systems :

  • 6-carboxy-4',5'-dichloro-2',7-dimethoxy-fluorescein (JOE)

520/548

  • carboxy-tetramethylrhodamine (TMR)

550/573
  • carboxy-X-rhodamine (CXR)

578/604

  • fluorescein (FL)

494/520

ProFluor® Assays :

  • rhodamine 110 (R110)

485/530
  • 7-amino-4-methyl-coumarin (AMC)

335/460

Propidium iodide (nucleic acid stain) 540/620
Protein 280
(1)Resorufin levels can be quantitated spectrophotometrically at 570nm, but measuring fluorescence is recommended due to the increased sensitivity. See the CellTiter-Blue® Cell Viability Assay Technical Bulletin, #TB317 or the CytoTox-ONEHomogeneous Membrane Integrity Assay Technical Bulletin #TB306 for more information.

-top of page-