EPA Method 8240A - Purgeable Surrogate Std

4,6-Dinitro-2-methylphenol

(±)-Atenolol-d7 (N-isopropyl-d7),100 µg/mL,MeOH,1mL,

EPA Method 533 Native Primary Std. (br/linear mix), 500ng/ml in MeOH, 1,2ml