Diafenthiuron methaneimidamide, 100 µg/ml, Aceton

(-)-Nicotine ditartrate, >99%, (CAS 65-31-6), 10g

2,2,3,5,5,6-Hexachlorobiphenyl,BZ-151

Method 1613 Clean-up Standard, 8ng/ml in Nonane, 20ml