Method 504.1LFB Mix Back Catalog number: 94019 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59731 ICP Multielement Standard Price on request 678965 Pyrene, 100 µg/ml, Cyclohexane, 1ml Price on request 79021 Endrin, 1000µg/ml in Hexane, 1ml Price on request