EPA Method 630/630.1 Stock Solution #1 Back Catalog number: 40024 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 18000-1810-100AN5 Metformin-HCl, 100µg/ml in Acetonitrile, 5ml Price on request NG-S31-1G Sodium laurate, 1g Price on request 681504 D8-Benzidine, 10mg Price on request