Tri-n-hexyl phosphate,1000 µg/mL,MeOH,1mL,

EPA Method 502/524 Volatile Standard

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

Acetochlor ESA sodium salt, 100ug/ml in MeOH, 1ml