4.4'-DDE (13C12), 100µg/ml in n-Nonane, 1,2ml Back Catalog number: S-FC93S-1.2ML Availability: In the manufacturer's stock Price on request - + Recommended 30031 EPA Method 525 - Internal Standard Price on request 50739 Hexavalent Chromium (Cr +6) Price on request 95490 EPA Method 524.3Gases Price on request