Heptachlor epoxide (isomer B), 1000µg/ml in MeOH, 1ml Back Catalog number: 70193 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 9960.30-5UG 5ß(H),17 alpha(H),21ß(H)-Hopane (mix. with 0132.30), neat, Solvent-neat, Unit ca. 5µg, # of units-1, Cas.no. Price on request 59350 Metals Mix Price on request 2054.22-100-HX Dibenzyl phthalate, 100µg/mL, Solvent-hexane, Unit 1mL, # of units-1, Cas.no. 523-31-9 Price on request