Metolcarb, 100 µg/ml, Acetonitrile, 5ml

1,2-13C2 15N-Glyphosate, 100 µg/ml, Water, 1ml

PCB No. 209 10 µg/mL in Isooctane, 10ml

n-Heptyltin trichloride, 1000 µg/ml, Methanol, 5