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  #21  
Old 04-13-2006, 02:02 AM
Fried Rice Fried Rice is offline
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But how can you know if its 20% of vitamin C just by a colour change? That does help though. I can see how it might work.
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Old 04-14-2006, 12:51 PM
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You know how you can the differences between different intensities of color that the naked eye can't see? Like the amount, the QUANTITATIVE differences between blue and light blue? Using a spectrophotometer. It measures the amount of light that passes through a liquid, and therefore, tells you how dark/light the color is. Check it out. Good luck!
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