@article{article9eaab557,
title   = {A simple protocol for the routine calibration of pH meters},
author = {Federman Neto, A. and Borges, Áurea Donizete Lanchote and Lavrador, Marco Aurélio Sicchiroli},
year = {2007},
journal   = {Revista de Ciências Farmacêuticas Básica e Aplicada}
}