D5-Atrazine-desisopropyl, 100 µg/ml, Acetone, 1m

n-Pentyl iso-pentyl phthalate (n-Pentyl 3-methlybutyl phthalate), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 776297-69-9

Nitrothal-isopropyl, 100 µg/ml, Ethyl acetate, 5

QC Standard 2