pH

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pH

potential of hydrogen; a measure of the acidity or alkalinity of a solution equal to the common logarithm of the reciprocal of the concentration of hydrogen ions in moles per cubic decimetre of solution. Pure water has a pH of 7, acid solutions have a pH less than 7, and alkaline solutions a pH greater than 7

pH

[pē′āch]
(chemistry)
A term used to describe the hydrogen-ion activity of a system; it is equal to -log aH+; here aH+is the activity of the hydrogen ion; in dilute solution, activity is essentially equal to concentration and pH is defined as -log10[H+], where H+is hydrogen-ion concentration in moles per liter; a solution of pH 0 to 7 is acid, pH of 7 is neutral, pH over 7 to 14 is alkaline.

pH(S)

(analytical chemistry)

pH

A measure of the acidity or alkalinity of a solution; numerically equal to 7.0 for a neutral solution; the pH value increases with increasing alkalinity and decreases with increasing acidity. Also See pH value.

PH

1. On drawings, abbr. for phase.
2. Abbr. for phillips head.

phot

A unit of illumination equal to 1 lumen per square centimeter. Abbr. ph.

PH

(tool)
The tool for looking up people in Eudora on the Macintosh. Equivalent to Unix's finger service.

pH

(2)

ph

(networking)
The country code for the Philippines.
References in periodicals archive ?
The patent, titled "Novel Topical Pharmaceutical Base with Anti-Pruritic and/or Anti-Inflammatory Drugs" covers forthcoming new formulations of skincare brands marketed by the Company's Doak Dermatologics subsidiary, including AcidMantle(R) skin pH balancing cream, prescription-only LidaMantle(R) topical anesthetic and prescription-only LidaMantle(R) HC topical anti-inflammatory anesthetic.
The pH balanced formulation works in combination with Witch Hazel extracts to help "level" skin pH and neutralize some surface oils, providing more even tanning results.
Caresoft is the most recent launch from Provital Group designed to improve sensitive skin conditions through the regulation of the epidermal skin pH gradient and its implication on the skin's barrier homeostasis, according to the company.