Methylmalonic acid, 100 µg/ml, Acetonitrile, 1ml

4-Fluoro-3-phenoxybenzoic acid, 100µg/ml in MeOH, 5ml

2,3,4,6,7,8-Hexachlorodibenzofuran ,50 µg/mL,n-nonane,1mL,

EPA Method 525 Pesticide Standard