Benzidine Back Catalog number: 94759 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 681024 Coumaphos, 10.0 µg/ml, Cyclohexane, 10ml Price on request 38009 WS Chorinated DBP’s - EPA Method 551 Price on request 673648 Paraoxon-ethyl, 100 µg/ml, Ethyl acetate, 5ml Price on request