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L'histoire derrière la découverte de l'échelle de pH est assez intéressante. Le concept de PH a été introduit pour la première fois par un chimiste nommé Soren Peder Lauritz, qui a travaillé au laboratoire Carlsberg à Copenhague, au Danemark. La première mention de ce terme ressemblait à celle-ci - P H -Un petit P avec un H dans l'indice.
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