EPA Method 502.2 Surrogate Standard Back Catalog number: 91704 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8577-K-W Triton X-114, 1000µg/mL, Solvent-water, Unit 1mL, # of units-1, Cas.no. Price on request 90871 1,4-Dioxane Price on request 679830 3-(Methylphosphinico)propionic acid, 100 µg/ml, W Price on request