(bār-tĕ-lō'), the reaction of ammonia with phenol-hypochlorite to give indophenol; the principle is used to analyze ammonia concentration in body fluids.
Berthelot,
Pierre Eugene Marcellin, French chemist, 1827-1907. Berthelot reaction - the reaction of ammonia with phenol-hypochlorite, used to analyze ammonia concentration in body fluids.