Mecanmess o le ph mita ma electrode gaosi ma tagata faʻatau atu i Saina e mafai ona mafai ona faʻaaogaina le ph i le proprode . E mafai ona tatou avatua le tautua faʻapolofesa ma sili atu tau mo oe. Afai e te fiafia i le PH mita ma le eletise eletise, faʻamolemole faʻafesoʻotaʻi matou. Fautuaga: Manaoga Faaletino, Mo se Faataʻitaʻiga: Oe, ODM, sa fautuaina ma e tusa ma manaoga, faamolemole e tusa ma isi ma faamatala manaoga faapitoa manaoga. Tatou te mulimuli atu i le lelei o le isi mea mautinoa o le tau o le loto fuatiaifo, tuuto.