WHO PCB Extraction Standard, 100pg/µl in nonane, 1,2ml

Theophylline

n-Pentyl iso-pentyl phthalate (n-Pentyl 3-methlybutyl phthalate), neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 776297-69-9

Phenylbutazon, 1000ug/ml, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 50-33-9