The colorimeter consists simply of a card with tiny polymer film squares that hold 36 designer dye drops, and came out of the lab of Kenneth Suslick, a chemist at the University of Illinois in Urbana-Champaign. Each dye pigment changes color when exposed to certain chemicals, and the combination of the 36 exposes a unique chemical fingerprint for certain aromas.
Suslick’s seventeen-year-old son applied the nifty device to studying coffee aromas as well, and showed how it could differentiate burned or spoiled batches.
Perhaps the colorimeter can also reveal the chemical signature of explosives or the colorful fragrance of
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