Surrogate Mix Back Catalog number: 91986 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677349 N-2,4-Dimethylphenyl-N'-methylformamidine HCl, 100 Price on request 8864.8-K-IO Quinoxaline, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no. Price on request 675989 4,4'-DDD, 100 µg/ml, Toluene, 5ml Price on request