EPA Method 552.2 - Surrogate Standard Back Catalog number: 30108 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended ENDOS-S Endosulfan Sulfate, 1.2mL x 100ug/mL, nonane Price on request 71476A 4-Chlorothioanisole Price on request 70486 trans-1,4-Dichloro-2-butene Price on request