Pesticides Calibration GC-MS/MS

3,3',5,5'-Tetrachlorobiphenyl ,100 µg/mL,isooctane,1mL,

1,2,3,4,5,6-Hexabromocyclohexane, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1837-91-8

Spironolactone,1000 µg/mL,MeOH,1mL,