PCB No. 189, 10µg/ml in Isooctane, 10ml

Caffeine, 100 µg/ml, Methanol, 1ml

Triethylene glycol mono(p-n-nonylphenyl) ether, 1000µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 51437-95-7

6-Nitrobenzo[a]pyrene-d11, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 352431-12-0