Heptachlor epoxide (isomer B), 1000µg/ml in MeOH, 1ml Back Catalog number: 70193 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 79505 Methyl tert-butyl ether Price on request 674860 Phosphonic acid, 250mg Price on request 98681 Pesticides Calibration GC-MS/MS Price on request