WS Disinfection By-Products - Cal Check 1

N,N-Dimethylguanidine, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 6145-42-2

Sulfotep, 100 µg/ml, Ethyl acetate, 1ml

Tetramethrin, 100 µg/ml, Acetonitrile, 1ml