Pyraclofos, 100 µg/ml, Acetone, 1ml

Method 200.8 / 1638 / 1640 Internal Standard, in 2%-HNO3/Water, 4x25ml

1-(3,4-Dichlorophenyl)urea, 100mg

1,5-Dichloronaphthalene, 1.2ml x 50ug/ml, nonane