Potassium (K)

Paraoxon-ethyl, 100 µg/ml, Acetonitrile, 5ml

1,4-Dioxane in Water (PT)

GC-IRMS Standards ((C25 (?13C: -28.21); C30 (?13C: -28.60); C36 (?13C: -26.15); C40 (?13C: -27.05)), 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no.