FLUORESCENT DYE 540-M STREPTAVIDIN FLUORESCENCE DYE 540-M WITH STREPTAVIDIN CONJUGATE. FLUORESCENT DYE 540-M MAY HAVE LESS SPILLOVE R EFFECT THAN PACIFIC ORANGE DUE TO ITS SLIGHTLY SHARPER EMISSION. ALL THE FLUORESCENT DYE M SERIES PRODUCTS ARE DESI 1 * 100 µG