4,4'-Dihydroxydiphenylmethane, 1.2ml x 50ug/ml, methanol

EPA Method 525.2 Pesticide Level 1

n-Octadecane-d38, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 16416-31-2

Calibration Std. #2