Suppose i want to manufacture 3 litters of Acid free shampoo for bike or car washing. Now suppose i make a working formulae for this. Now i want to color my formulation. Which coloring agent or dye is suitable for my formulation? And what is the amount or percentage i should use?  Please answer at your own words.

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Applications of Molecular Spectroscopy

When light sources pass through the diffraction grating then light splits into different wavelengths. The light source produces two types of patterns that are shown as destructive and non-destructive. The light source is in the form of quanta that is quantitation.