EPA Method 551 Analytes Back Catalog number: 32052 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675970 Heptadecafluorooctanesulfonic acid potassium salt, Price on request NAP6MHPS Sodium perfluoro-6-methylheptanesulfonate, 1.2ml x 50ug/ml, methanol Price on request 678014 Phenthoate, 100 µg/ml, Toluene, 1ml Price on request