Method 1640Mix A Back Catalog number: 53146 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2516.16-10MG Acetylsalicylsalicylic acid, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 530-75-6 Price on request 66187 2,2’,3,4’,5,5’,6-Heptachlorobiphenyl (187) Price on request 1452.16-1G 2,6-Di-tert-butyl-4-ethylphenol, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 4130-42-1 Price on request