Well, that sounds reasonable, but you will need to run several experiements to determine if it works, and you may need a spectrosensitometer to check out the real spectral sensitivity after you do the dying.

Since we have no concrete source of dye, other than Sigma Aldrich, then that is the only common dye avaialble to us. Thanks Helen. I tried Kodak's current chemistry list and all of their sensitizing dyes formerly listed are no longer available.

I currently have samples of about 10 dyes which are only for the visible portion of the spectrum and will not help with this problem.

PE