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  1. Molecular Basis for the Indicator Color Change: Color changes in molecules can be caused by changes in electron confinement. More ...
    www.elmhurst.edu/~chm/vchembook/​186indicator.html - Cached
  2. Colors of an Indicator Solution Indicators change color gradually at various pH. Let us assume that the acid form has a blue color and the basic form has red color.
    www.science.uwaterloo.ca/~cchieh/cact/​c123/indicator.html - Cached

  3. pH indicator - Wikipedia, the free encyclopedia

    This is because the slightest color change of the indicator-containing solution suggests the equivalence point has been reached. Therefore, ...
    en.wikipedia.org/wiki/PH_indicator - Cached
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  4. Approximate pH range for color change: 4.6-6.0 Color of acid form: yellow Color of base form: red alizarin yellow GG
    antoine.frostburg.edu/.../101/acidbase/​indicators.shtml - Cached
  5. Learn about what an acid-base indicator is and choose an acid-base indicator from this comprehensive table of acid-base indicators, based on pH range or color change.
    chemistry.about.com/od/acidsbases/a/​Acid-Base-Indicators.htm - Cached
  6. A color change indicator including: a liquid having a predetermined index of refraction and rate of evaporation; a reservoir for holding the liquid; and an ...
    www.freepatentsonline.com/4629330.html - Cached
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  7. A time temperature indicator system according to claim 1 which generates a visually distinct color signal due to a color change of the indicator reagent ...
    www.faqs.org/patents/app/20100043695 - Cached
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  8. Humidity indicator card - Wikipedia, the free encyclopedia

    A humidity indicator card (HIC) is a card on which a moisture-sensitive chemical is impregnated such that it will change color when the indicated relative humidity is ...
    en.wikipedia.org/wiki/Humidity_​indicator_card - Cached
  9. pH and Color Change Key Concepts. Whether a solution is acidic or basic can be measured on the pH scale. When universal indicator is added to a solution, the color ...
    www.middleschoolchemistry.com/​lessonplans/chapter6/lesson8 - Cached
  10. Learn about pH indicators: read here . . . ... Color in Acid: Red Color in Base: Yellow Approximate pH range for color change: 3.1-4.4 (The color you see will be a ...
    www.all-about-ph.com/ph-indicators.html - Cached