EPA Method 524 & 624 - Internal Standard

EPA 8041A Surrogate Standard S-4382 1mg/mL in isopropanol, 1 mL, 5 x 1mL, 5mL 2,4-Dibromophenol

4-Hydroxybenzoic acid, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 99-96-7

a,a’-Dibromo-m-xylene