Heptachlor epoxide (isomer B), 1000µg/ml in MeOH, 1ml Back Catalog number: 70193 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 51068 ASTM D-4815 Calibration Mix #5 Price on request 23-B-78-CDF 2,3-Dibromo-7,8-dichlorodibenzofuran, 1.2ml x 50ug/ml, toluene Price on request 679775 2,4-D-iso-propyl ester, 250mg Price on request