Metolachlor (ring-13C6), 100µg/ml in n-Nonane, 1,2ml

p-Toluidine, 250mg

9-Ethylphenanthrene,500µg/mL,isooctane,1mL,

Thiophene in Toluene Units: 5x1mL ampoule, 1x10mL screw-capped bottle Chiron No. Concentration µgS/g (ppm) Wt.% S-4053-0 Blank 0 S-4053-K 1 000 0.1000 S-4053-2.5K 2 500 0.2500 S-4053-5K