COD Calibration Standard Back Catalog number: 51255 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9556.6-K-IP 2,4,6-Trinitrophenol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 88-89-1 Price on request 11661.10-50-IO 1,6-Dichloronaphthalene,50 µg/mL,isooctane,1mL, Price on request C12721000 3,3´-Dimethoxybenzidine, certified, 0.1g Price on request