Oxytetracycline, 96%,1000 µg/mL,acetonitrile,1mL,

Internal Standard Solution, 1.2ml, nonane

2-Naphthol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 135-19-3

Dioxathion, 100 µg/ml, Ethyl acetate, 5ml