Tri-n-propyl phosphate-d21, 1.2ml x 50ug/ml, toluene

EPA Method 8040A - Analytes Mix “B”, 2000µg/mL in 2-propanol, 1ml

2,3,3',4,5,5',6-Heptachlorobiphenyl ,100 µg/mL,isooctane,1mL,

Metazachlor