EPA Method 525.1 Standard Back Catalog number: 94572 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680340 2-Methylnaphthalene, 10 µg/ml, Cyclohexane, 10ml Price on request 684319 D3-Propoxur, 100µg/ml in Acetonitrile, 1ml Price on request 53145 Method 200.8/1638/1640 Internal Standard Price on request