2,2’,3,4’,5,5’,6-Heptachlorobiphenyl (187)

2,3',4,5,5'-Pentachlorobiphenyl,100 µg/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

2,3,7,8-Tetrachlorodibenzofuran , 1.2ml x 50ug/ml, nonane