Method 504.1MDL Mix Back Catalog number: 94020 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 681259 Hippuric acid, 100mg Price on request 0233.42-5MG [bc,ef,hi,kl,no,qr]-Hexabenzocoronene, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 190-24-9 Price on request CA15986810 Perfluoroethanesulfonic acid, 10mg Price on request