Calibration Standard Mix 4 Back Catalog number: 52036 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50030 Plant Mix Price on request 2499.13-50-IO 3-Methyldibenzothiophene, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 16587-52-3 Price on request C12726000 3,3'-Dimethylbenzidine, 100mg Price on request