Asante Calcium Green Overview
In the past, the nonratiometric Fluo dyes have been very useful and popular because they have a large dynamic range (Fmax/Fmin ≈ 100). Asante Calcium Green (ACG) is much brighter than the Fluo dyes with an even larger dynamic range: Fmax/Fmin = 220 (Figure 4.7), where the relevant quantum efficiencies are: Ca2+-free Q = 0.00225, Ca2+-bound Q = 0.495. Figure 4.8 compares the quantum efficiency of Ca2+-bound ACG to fluorescein.
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