(Ph meters) can be hand-held.Logical formLearned from2 sentences. A male may work on a ph.Logical formLearned from2 sentences. Information can be on phs.Logical formLearned from2 sentences. A value can be constituted-of-or-filled-with phs.Logical formLearned from2 sentences. A person may pursue a ph.Logical formLearned from2 sentences. A ph can be influent.Logical formLearned from2 sentences. Phs may agree with recommendations.Logical formLearned from2 sentences. (Blood phs) may undergo measurements.Logical formLearned from2 sentences. Some environmental instruments can be for ph.Logical formLearned from2 sentences. Applicants may have an (and/or ph).Logical formLearned from2 sentences. Persons may find phs.Logical formLearned from2 sentences. A ph may pertain-to a precipitation.Logical formLearned from2 sentences. Precipitation may have a ph.Logical formLearned from2 sentences. Problems can be with ph.Logical formLearned from2 sentences. A ph may pertain-to baths.Logical formLearned from2 sentences.