Butylate, 10.0 µg/ml, Ethyl acetate, 10ml Back Catalog number: 678335 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 93769 EPA Methd 8330 Standard Price on request 2559.8-50-ME 1H,1H,2H,2H-Perfluorooctane sulfonic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 27619-97-2 Price on request 1542.10-K-IO 2-Aminonaphthalene-d7, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 93951-94-1 Price on request