Clindamycin-HCl, 100µg/ml in Acetonitrile, 5ml

1,2,3,4-Tetrachlorobenzene, 1000µg/mL in Isooctane, 1ml

WS Disinfection By-Products - Cal Check 4

D8-4,4'-DDT, 100 µg/ml, Acetone, 1ml