EPA Method 500 Series Internal Standard #5 Back Catalog number: 30004 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 676775 Cloprop, 10.0 µg/ml, Acetonitrile, 10ml Price on request T-PFOS Potassium perfluorooctanesulfonate (Technical Grade), 1.2ml x 50ug/ml, methanol Price on request XA15170100AC Metolachlor D6 (propyl D6), 100 ng/µl, 1.1ml Price on request