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2. Phenol red - Wikipedia

   en.wikipedia.org/wiki/Phenol_red

   Phenol red, 40 μM: colors in cell culture medium at a pH range from 6.0 to 8.0. Most living tissues prosper at a near-neutral pH—that is, a pH close to 7. The pH of blood ranges from 7.35 to 7.45, for instance. When cells are grown in tissue culture, the medium in which they grow is held close to this physiological pH. A small amount of ...

3. pH - Wikipedia

   en.wikipedia.org/wiki/PH

   The pH range is commonly given as zero to 14, but a pH value can be less than 0 for very concentrated strong acids or greater than 14 for very concentrated strong bases. [2] The pH scale is traceable to a set of standard solutions whose pH is established by international agreement. [3]

4. Takhini Hot Springs - Wikipedia

   en.wikipedia.org/wiki/Takhini_Hot_Springs

   The temperature from the source is 46.5 °C (115.7 °F). The pool is divided into two sections: the hot side and the cool side. As the water flows from the source to the hot pool the water cools to 42 °C (108 °F), [3] the cool side is an average of 36 °C (97 °F). Takhini Hot Springsdoes not have a sulphurous odour.

5. Soil pH - Wikipedia

   en.wikipedia.org/wiki/Soil_pH

   Soil pH is a measure of the acidity or basicity (alkalinity) of a soil. Soil pH is a key characteristic that can be used to make informative analysis both qualitative ...

6. Acidosis - Wikipedia

   en.wikipedia.org/wiki/Acidosis

   In the fetus, the normal range differs based on which umbilical vessel is sampled (umbilical vein pH is normally 7.25 to 7.45; umbilical artery pH is normally 7.18 to 7.38). [2] Fetal metabolic acidemia is defined as an umbilical vessel pH of less than 7.20 and a base excess of less than −8.

7. pH indicator - Wikipedia

   en.wikipedia.org/wiki/PH_indicator

   In and of themselves, pH indicators are usually weak acids or weak bases. The general reaction scheme of acidic pH indicators in aqueous solutions can be formulated as: HInd (aq) + H 2 O (l) ⇌ H 3 O + (aq) + Ind − (aq) where, "HInd" is the acidic form and "Ind −" is the conjugate base of the indicator. Vice versa for basic pH indicators ...