EPA Method 624 Surrogate Standard Back Catalog number: 19112 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674701 Azamethiphos, 250mg Price on request 675624 Isoprothiolane, 10 µg/ml, Acetonitrile, 10ml Price on request 0166.30-5MG Zeorine, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 22570-53-2 Price on request