EPA Method 548.1 Analyte Back Catalog number: 30277 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679879 4,4'-Diaminodiphenyl sulfide, 100 µg/ml, Acetonit Price on request 3310.9-100-CY Ametryne Price on request 676234 Pendimethalin, 100 µg/ml, Cyclohexane, 1ml Price on request