2,3-Butanediol, certified, 0.25g

Prallethrin, 100 µg/ml, Acetonitrile, 5ml

ISO 9377-2Mod Standard Mixture of n-Alkanes + BTEX I S-4423-50-5PE C7+C10+ C20+C40+BTEX (without p-Xylene) in n-Pentane Determination of Hydrocarbon Oil in Water Index 9 Analytes; each 50µg/mL in n-pentane; units: 1x1mL, 1x5mL, 10x1mL Benzene

O,O-Diethylthiophosphate, potassium salt