1,3-Bis(4-nitrophenyl)urea, 50mg Back Catalog number: 680032 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 82751 EPA Method 8275A Mix #2 Price on request 677986 Fenthion, 100 µg/ml, Toluene, 1ml Price on request 3522.9-100 Trietazine, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 1912-26-1 Price on request