Paraoxon-methyl, 100 µg/ml, Toluene, 5ml

pH 10.0 Standard @ 25°C, in water, 100ml

Eicosane, 250mg

2H-Perfluoro-[1,2-13C2]-2-decenoic acid (8:2), 50µg/ml in Isopropanol, 1,2ml