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Litmus milk changes from acid to alkaline. [Pg.160]

Litmus milk changes from alkaline to acid. [Pg.160]

Cholera red reaction is positive (the addition of sulfuric acid to a nitrate peptone broth results in a red colorization). [Pg.160]

One or more sulfonphthalein indicators is reduced (bromthymol blue, phenol red, etc.). [Pg.160]

Voges-Proskauer test is positive (also see feature number 24035). [Pg.160]

See other pages where Reduction and Indicator Tests is mentioned: [Pg.160]