D5-Norfloxacin, 100 µg/ml, Acetonitrile, 1ml

Sarafloxacin D8 hydrochloride trihydrate, certified, 10mg

2,2',4,5,6'-Pentachlorobiphenyl ,100 µg/mL,isooctane,1mL,

Methanol QC Reference Mixture III n-Butyl sulfide, 0.5 ppm (weight S by weight) in 99.9 % methanol; units: 1x10mL, 5x10mL