EPA Method 8141A/1657 - Analytes Back Catalog number: 92800 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 71030 sec-Butanol Price on request 97957 Method 525.2 Solution A Price on request