CWA Organophosphorous Pesticides Back Catalog number: 38135 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79301 Heptachlor epoxide Price on request 9871.16-50-IO 4,10-Dimethylphenanthrene, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 23189-63-1 Price on request 675553 Chlorthiophos, 10.0 µg/ml, Ethyl acetate, 10ml Price on request