Mixed Calibration Standard 1 Back Catalog number: 52053 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2121-3-18:25G Perfluoro-n-octanoic acid; PFOA, 98%, 25g Price on request 71608 Pentadecafluorooctanoic acid Price on request 58065 Terbium (Tb) Price on request