Perfluorooctane sulfonic acid, 100µg/ml in MeOH, 1ml Back Catalog number: PFOS-001S Availability: In the manufacturer's stock Price on request - + Recommended L20008100IO PCB No. 81, 10µg/ml in Isooctane, 10ml Price on request FHPPA 3-Perfluoroheptyl propanoic acid (7:3), 1.2ml x 50ug/ml, methanol Price on request 679874 4-Aminobiphenyl, 100 µg/ml, Acetonitrile, 1ml Price on request