EPA Method 200.8Mix Back Catalog number: 59115 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676573 Phthalic acid, 250mg Price on request F-7009-100MG 3,4-Diaminobiphenyl 2HCl, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 471238-97-8 Price on request H998200 Hyperoside, 5mg Price on request