A high-purity, colorless liquid containing 98–100% formic acid, manufactured under ExpertQ® quality and compliant with ACS, European Pharmacopoeia (Ph Eur), and Chinese Pharmacopoeia (ChP) standards. Widely used as an acidifying agent, reagent, and mobile phase additive in analytical chemistry, including HPLC and LC-MS, as well as in chemical synthesis and laboratory research. Provides controlled impurity levels, consistent concentration, and reliable performance for accurate and reproducible analytical results.