Heptachlor-endo-epoxide (trans-, isomer A), certified, 10mg

Thiophene/2-Methylthiophene (2:1) in isooctane/Toluene(3:1); Units: 5x1mL ampoules, 1x10mL screw-capped bottle Chiron No. Concentration µgS/g (ppm) Wt.% S-4056-0 Blank 0 S-4056-5 5

Dibenz[a,h]anthracene-d14, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 13250-98-1

Phosphamidon, 100 µg/ml, Acetonitrile, 1ml