EPA Method 8021B Internal Standard Back Catalog number: 19394 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93998 Dibenzo(a,h)anthracene Price on request 58011 Sodium (Na) Price on request 8936.4-1G Fumaric acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 110-17-8 Price on request