Aqueous ethanol control EtOH AQ (5.0g/L), 10 x 3.0ml

PCB No. 157, 10µg/ml in Isooctane, 10ml

13C3-Caffeine, 100 µg/ml, Methanol, 1ml

2,2',4',5-Tetrabromo-4-methoxydiphenyl ether, 1.2ml x 50ug/ml, nonane