alkalinity
preferred label: خصلت قلیایی @fa
type: Concept
related: PH

water pollution
preferred label: آلودگی آب @fa
type: Concept
related: PH

chemical properties
preferred label: خواص شیمیایی @fa
type: Concept
narrower: PH

PH
alternative label: FACTOR PH
related: acidity
related: alkalinity
related: water pollution
broader: chemical properties
preferred label: پ‌هاش @fa
type: Concept

acidity
preferred label: قدرت اسیدی @fa
type: Concept
related: PH