EPA Method 502.2 Surrogate Standard Back Catalog number: 91704 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679706 Ammelide, 100mg Price on request 681368 Fluroxypyr-1-methylheptylester, 100mg Price on request 93602 n-Hydrocarbon Mix #2 Price on request