EPA Method 602 - Surrogate Standard Back Catalog number: 19097 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9884.X-1-05ME Azaspirazide 2,1.5 µmol/L ,MeOH,0.5mL Price on request 73218 Dimethyl trisulfide Price on request M258815 Metformin Hydrochloride, 1g Price on request