Hexavalent Chromium (Cr 6+) Back Catalog number: 50787 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71127 EPA Method 418.1 - Total Petroleum Hydrocarbons Price on request 79160 N-Nitrosodiphenylamine Price on request 673354 Chlorotoluron, 10.0 µg/ml, Acetonitrile, 10ml Price on request