1-(4-Isopropylphenyl)-3-methylurea, 100mg

2-Nitrotoluene, 100 µg/ml, Methanol, 5ml

2,2',3,3',4,5,5'-Heptachloro-4'-methoxybiphenyl, 1.2ml x 50ug/ml, nonane

Urban dust - Organic contaminants, 2g