EPA Method 525.2 Standard Back Catalog number: 92693 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 685316 D5-Homovanillic acid, 10mg Price on request 18000-1810-100AN5 Metformin-HCl, 100µg/ml in Acetonitrile, 5ml Price on request 1843.13-100MG 4-n-Hexylbenzoic acid, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 21643-490-6 Price on request