Atrazine-2-hydroxy, 10.0 µg/ml, Methanol, 10ml

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

Arochlor 1254, 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 11097-69-1

Oxalic Acid (C2H2O4)