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2. Bromothymol blue - Wikipedia

   en.wikipedia.org/wiki/Bromothymol_blue

   Different colors of bromothymol blue at marked pH conditions. Bromothymol blue may be used for observing photosynthetic activities, or as a respiratory indicator (turns yellow as CO 2 is added). [7] [8] A common demonstration of BTB's pH indicator properties involves exhaling through a tube into a neutral solution of BTB.

3. Universal indicator - Wikipedia

   en.wikipedia.org/wiki/Universal_indicator

   Solution: The main components of a universal indicator, in the form of a solution, are thymol blue, methyl red, bromothymol blue, and phenolphthalein. This mixture is important because each component loses or gains protons depending upon the acidity or alkalinity of the solution being tested. It is beneficial to use this type of universal ...

4. pH indicator - Wikipedia

   en.wikipedia.org/wiki/PH_indicator

   The observed spectrum (green) is the sum of the spectra of HA (gold) and of A − (blue), weighted for the concentration of the two species. When a single indicator is used, this method is limited to measurements in the pH range p K a ± 1, but this range can be extended by using mixtures of two or more indicators.

5. Simmons' citrate agar - Wikipedia

   en.wikipedia.org/wiki/Simmons'_citrate_agar

   The increase in pH then causes color change in the bromothymol blue indicator, turning it blue. Under neutral conditions the medium remains a green color. The color change to blue is useful because growth on Simmons' citrate agar is often limited and would be hard to observe if it were not for the color change.

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8. Cystine–lactose–electrolyte-deficient agar - Wikipedia

   en.wikipedia.org/wiki/Cystine–lactose...

   Bromothymol blue is the indicator used in the agar, it changes to yellow in case of acid production during fermentation of lactose or changes to deep blue in case of alkalinization. Lactose-positive bacteria build yellow colonies. Bacteria which decarboxylate L-cystine cause an alkaline reaction and build deep blue colonies. [1]

9. Man getting packages finds missing babies in a ditch - AOL

   www.aol.com/man-getting-packages-finds-missing...

   Indianapolis Metropolitan Police is seeking the community’s help in locating this car stolen with a 4-month-old and 5-month-old child in the back Dec. 2, 2024.