This won't work because of blue light reflectance will overrun green
fluorescence. You still need an emission filter.
>I would like to check if anyone has tried to identify colonies of stably
>transfected mammalian cells by naked-eye examination, using EGFP as a
>reporter gene. Does anyone know if there is a commercial supplier of a
>blue-light transilluminator that might be useful for this? Thank you for