Michigan GRO Standard Back Catalog number: 51182 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 682237 2,2'-Dihydroxy-4,4'-dimethoxybenzophenone, 1000mg Price on request 53044 Calibration Standard Mix 2 Price on request L-PFOS Sodium perfluoro-1-octanesulfonate, 50µg/ml in MeOH, 1,2ml Price on request