EPA Method 509 Internal Standard Back Catalog number: 30097 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended L-PFOSK Potassium perfluoro-1-octanesulfonate, 1.2ml x 50ug/ml, methanol Price on request 79428 Diazinon-O-analog Price on request 681318 Propazine-2-hydroxy, 100mg Price on request