PH

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PH

The two-character ISO 3166 country code for PHILIPPINES.
References in periodicals archive ?
(11) and many others have worked on gastric volume, gastric pH under general anaesthesia and also on critical volume and critical pH for occurrence of acid aspiration syndrome.
[20] The ability of saliva to buffer acids is essential for maintaining pH values in the oral environment above the critical pH, thereby protecting teeth against demineralization.