1H,1H,2H,2H-Perfluorodecanesulfonic acid, 10mg

Fenazaquin, 10.0 µg/ml, Acetonitrile, 10ml

1-Methylpyridinium iodide, 100mg

Tetracycline 13C22,15N2 dried down 2.5 µg/mL, 5 x 1ml