1-Naphthol, 100µg/ml in Acetonitrile, 5ml

Nitrate as NO3-, 1000µg/ml in water, 100ml

2,4-DB-methyl ester, 10.0 µg/ml, Ethyl acetate,

2,4,8-Trichlorodibenzofuran,50 µg/mL,n-nonane,1mL,