Methidathion, 1000µg/ml in MeOH, 1ml

Heptachlor endo-epoxide, 100 µg/ml, Ethyl acetate

EPA Method 8260B Internal Standard

n-Hexadecane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 544-76-3