Spiking Standard 1 Back Catalog number: 53064 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2728.3-250MG N,N-Dimethylguanidine, neat, Solvent-neat, Unit 250mg, # of units-1, Cas.no. 6145-42-2 Price on request 8567.20-10MG 7,12-Dimethylbenz[a]anthracene, Comet assay grade, , Solvent-, Unit , # of units-, Cas.no. 57-97-6 Price on request 673863 Bensulfuron (free acid), 10mg Price on request