also: ピーエイチちょうせいざい
noun
pH adjuster
Technical term used in chemistry, food processing, water treatment, and cosmetics to refer to substances that regulate acidity or alkalinity.
この製品にはpH調整剤としてクエン酸が含まれています。
This product contains citric acid as a pH adjuster.
Compound of pH (pH) + 調整 (adjustment) + 剤 (agent). The reading ペーハー is from German 'pH', while ピーエイチ reflects the English pronunciation.