EPA Method 625 Base/Neutrals Mix #4

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

3-Hydroxynaphthalene-2,7-disulfonic acid disodium

Fenpropimorph, 100µg/ml in MeOH, 1ml