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Is 0.05ppm a suitable tolerance for measuring absorption on a spectrometer for beverages? When is it no longer a visible difference to the naked eye 1ppm, 0.1ppm, 0.01ppm, etc?

April 26, 2017absorption beverages longer measuring spectrometer suitable tolerance visible

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Is 0.05ppm a suitable tolerance for measuring absorption on a spectrometer for beverages? When is it no longer a visible difference to the naked eye 1ppm, 0.1ppm, 0.01ppm, etc?

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This would depend on what color the beverages are and what you are measuring. The only way to evaluate visual tolerances is with colorimetry, PPM on spectral absorptance functions tells you very little (perhaps nothing) about visual perception.