p-Toluidine-2-sulfonic acid, 250mg

Whole milk powder - Aflatoxin M1 (low level), 30g

EPA 604, Surrogate Standard as PFB derivatives S-4375 1 Analyte, 200 µg/mL in methanol, 5mL or 1mg/mL in isopropanol, 1mL 2,4,6-Tribromophenol-PFB

EPA Method 527 Surrogate Standard