EPA Method 8240A Matrix Spiking Standard Back Catalog number: 82410 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended CFN99272 Quercetin, >98%, 20mg Price on request 676791 4-tert-Octylphenol-di-ethoxylate, 1 µg/ml, Aceton Price on request 79010 Ethylenediamine, 1000µg/ml in MeOH, 1ml Price on request