When sourcing from a Citric Acid manufacturer, you must ensure the product complies with global pharmacopoeia and food safety standards. Key certifications include BP (British Pharmacopoeia), USP (United States Pharmacopeia), and FCC (Food Chemicals Codex). For food-grade applications, verify that the manufacturer holds ISO 22000 or FSSC 22000 food safety management certifications, as well as HACCP (Hazard Analysis and Critical Control Points). If your target market has specific dietary requirements, ensure the supplier provides Halal and Kosher certificates.