Spiking Standard 3 Back Catalog number: 56200 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678301 1,3-Dinitrobenzene, 250mg Price on request 2540.7-50MG Paraxanthine, neat, Solvent-neat, Unit 50mg, # of units-1, Cas.no. 611-59-6 Price on request 677975 Disulfoton, 100 µg/ml, Toluene, 1ml Price on request