Nitrite as NO2-, 1000µg/ml in water, 100ml

1,2,4,5-Tetrabromo-3,6-dimethylbenzene,50 µg/mL,isooctane,1mL,

1,2,4,8-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane

Sulfadimethoxine, 250mg