EPA Method 502/524 Surrogate Standard #1 Back Catalog number: 30070 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 15900-2671D-100CY alpha-HCH-d6, 100µg/ml in Cyclohexane, 1ml Price on request 688444 Tribromoacetic acid, 100µg/ml in Water, 1ml Price on request 70169 Endosulfan sulphate Price on request