The App is intended to assist in setting the sample pH based on the Zero Charge Point (PCZ) test. pH Plus is the result of the implementation of part of a PhD research in Materials Science (UFPI) of doctoral students André Luiz Ferreira de Carvalho Melo (IFPI), Marcelo Teixeira Carneiro (IFPI) under Co-supervision of Dr. Roosevelt Delano de Souza Bezerra (IFPI) and supervision of Dr. Edson Cavalcanti da Silva Filho (UFPI).
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