EPA Method 508 Pesticide Standard Back Catalog number: 92949 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended L20012300IO PCB No. 123, 10µg/ml in Isooctane, 10ml Price on request 59509 Element Mix #3 Price on request 673666 Phosphamidon, 100 µg/ml, Ethyl acetate, 5ml Price on request