Bromophos-methyl, 100 µg/ml, Toluene, 1ml

4-Hydroxy-2',3,5,5'-tetrachlorobiphenyl, 10mg

Fenthion-sulfoxide, 100 µg/ml, Toluene, 5ml

VOC Standard, 100g/ml in MeOH : water [9:1], 1ml