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acid-base indicator
(redirected from PH indicator)

   Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.01 sec.
acid-base indicator [′as·əd ′bās ′in·də‚kād·ər]
(analytical chemistry)
A substance that reveals, through characteristic color changes, the degree of acidity or basicity of solutions.


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Scientists use something called pH indicator to measure how acid or alkali something is.
Staphylococcus: These vials contain the membrane filter and selective and differential growth medium above containing mannitol and a pH indicator (Phenol Red).
The Tufts team embedded three very different biological agents in the silk solution: a protein (hemoglobin), an enzyme (horseradish peroxidase) and an organic pH indicator (phenol red), which maintained their activity for long periods when simply stored on a shelf.
 
 
 
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