Benzidine Back Catalog number: 70027 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4247-ASS-ME EPA 604 Calibration Mixture 11 Analytes, each 500µg/mL in methanol; unit: 1x1mL (2,4-Dinitrophenol and 4,6-dinitrocresol at concentration 1000µg/mL) 2071.7 4-Chloro-3-methylphenol [59-50-7] 2062.6 2-Chlorophenol [95-57-8] 2064.6 2,4-Dichlorophenol [ Price on request 38027 WS Toxaphene Price on request N545450 N-Nitroso-L-proline, 10mg Price on request