Atrazine, 10.0 µg/ml, Ethyl acetate, 10ml

2,3,3',4,5,6-Hexachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 41411-62-5

Chlortetracycline hydrochloride,neat,neat,250mg

ASTM D-2887 Column Test Standard