Sodium Dodecylbenzenesulfonate (soft type) (LAS 10

1,2-Benz[a]anthraquinone

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

3-tert-Butylphenyl diphenyl phosphate, 1.2ml x 50ug/ml, toluene