EPA Method 548.1 Analyte Back Catalog number: 30077 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 18000-0368D-100AN 17b-Estradiol-2,4,16,16,17-d5, 100µg/ml in Acetonitrile, 5ml Price on request 10135.45-K-IO 4-n-Nonylphenol pentadecaethoxylate Price on request 81212 EPA Method 8121 Analytes, 1000µg/ml in HE:TO [1:1], 1ml Price on request