Ochratoxin A, 10 µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 303-47-9

2-Methyl-5-nitroaniline, 100 µg/ml, Acetonitrile,

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

EPA Method 525 - Internal Standard