Ethanol in serum control EtOH SE (0.2g/L), 10x3ml

2-(1-Hydroxypropyl)promazine,neat,neat,10mg,

5-Chloro-2-methyl-4-isothiazolin-3-one, certified, 0.1g

4,4’-Diamino-3,3’-dimethyldiphenylmethane