EPA Method 531.1 - Analytes Mixture Back Catalog number: 33042R Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11074.10-10MG 1,2-Dimethylindole,neat,neat,10mg, Price on request 1579.4-10MG Metformin hydrochloride Price on request 59220 Method 6020Mix B Price on request