IP 391-95 Calibration Level 1 Back Catalog number: 98401 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 19132 EPA Method 508 - Performance Check Solution Price on request 678148 Sulprofos, 100 µg/ml, Acetonitrile, 5ml Price on request 673754 Camphechlor (Toxaphene), 10.0 µg/ml, Ethyl acetat Price on request