EPA Method 624 Analytes Back Catalog number: 40120 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71209 Methanol, 1000µg/ml in Water, 1ml Price on request C14950050 Metazachlor-oxalamic acid (OA), 10mg Price on request 81403 Chlorpyrifos, 1000µg/ml in Hexane 1ml Price on request