EPA Method 552.1 - Surrogate Standard Back Catalog number: 31056 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 96872 EPA 537 UCMR3 Calibration Mix 3 Price on request 73408 1,3-Dioxolane Price on request 21006 Base/Neutrals Surrogate Standard Price on request