EPA Method 508 Surrogate Standard Back Catalog number: 19042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 51192 Biodiesel - B20 Blend Price on request 3380.19-100 Diflufenican, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 83164-33-4 Price on request 676585 Dimethenamid, 100mg Price on request