2',3,4-Trichlorobiphenyl (33)

Ethofumesate-2-keto, 10.0 µg/ml, Cyclohexane, 1m

Chromium (Cr), 1µg/ml in 2%-HNO3/Water, 4 x 25ml

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