EPA Method 8260B Internal Standard Back Catalog number: 22213 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended PFDA Perfluoro-n-decanoic acid, 1.2ml x 50ug/ml, methanol Price on request 71892 4-Methyldibenzothiophene Price on request P2155018 Plastic additive 18, 50mg Price on request