Equations 1 and 2 use the the spectral profile overlaps among the components listed.

Eq1 Excitation Throughput (TEX) TEX = Fl. dye ex * Ex filt * lamp output (or laser line)*1-DM
Eq2. Emission Throughput (TEM) TEM = Fl. dye em * Em filt * DM
Eq3. Instrument Efficiency (EI) EI = TEX * TEM
Eq4. Brightness Index (IB) IB= (Ec * QY)/1000
Eq5. Theoretical Output (TO)* TO = EI * IB

*If either QY or Ec, or both, are not available, a value of “1” is used for IB in the TO calculation.

DM = dichroic mirror
QY = fluorescent dye quantum yield
Ec = fluorescent dye Extinction coefficient
Ex max = wavelength at Excitation maximum
Em max = wavelength at Emission maximum
Stokes Shift = Em max – Ex max

 
      

 

The website and database were developed by Carl Boswell§ and George McNamara‡.  The Microsoft Access® interface and Macromedia Flash® animation were developed by James Reyneart† and Amit Gupta†. For questions or comments regarding the website, contact Carl Boswell
§ University of Arizona, Department of Molecular and Celluular Biology and The Arizona Cancer Center
Childrens Hospital Los Angeles
University of Arizona, Learning Technologies Center

© 2004 Arizona Board of Regents