Tulathromycin B, approximately 5% (As a mixture with Tulathromycin A), 5mg

Dibenzo[b,k]chrysene, 200µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 217-54-9

Ethanol standard in serum,0.1g/L,serum, 1.5mL

3-Ethyl-1,1-diphenylurea, 99%,neat,neat,10mg,