Method 1640Mix A Back Catalog number: 52146 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10781.18-K-ME Tri-n-hexyl phosphate,1000 µg/mL,MeOH,1mL, Price on request 1572.36-100MG Dimethyl pseudomorphine, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 121395-47-9 Price on request C10303000 L-(+)-Ascorbic acid, certified, 0.25g Price on request