EPA Method 552,552.1,552.2 Internal Std Back Catalog number: 30105 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended YA08060300HE Phthalate Esters Mix 3, 1000µg/mL in Hexane, 1ml Price on request 95685 Phthalate Mix #1 Price on request 676722 trans-Urocanic acid, 100mg Price on request