Calibration Std. #2 Back Catalog number: 59967X Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-23467-S 2,3,4,6,7-Pentachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 78004 2,4-D Price on request 679107 4,4'-DDD, 10.0 µg/ml, Cyclohexane, 10ml Price on request