EPA Method 625 Base/Neutrals Mix #1 Back Catalog number: 19114 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 685687 Acetaldehyde-2,4-DNPH, 1000µg/ml in Acetonitrile, 5ml Price on request 677188 Acrinathrin, 100mg Price on request 79285 beta-BHC Price on request