EPA Method 500 Series Internal Standard #5 Back Catalog number: 30004 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 10233 EPA Method 617/8080/8250/8270 - Analytes Price on request 1351.2-50MG 1,1,1-Trichloroethane (contains stabilizer 0.05% low alkyl epoxide), in ampoule,neat,neat,50mg, Price on request 70193 Heptachlor epoxide (isomer B), 1000µg/ml in MeOH, 1ml Price on request