D6-Metazachlor, 100 µg/ml, Acetonitrile, 1ml

EPA Method 8260B Surrogate Standard

4-Methyl-2-nitrophenol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 119-33-5

4-tert-Butylphenyldiphenyl phosphate-d13,100 µg/mL,isooctane,1mL