gamma-Hexabromocyclododecane,50 µg/mL,toluene,1mL,

Mixed Calibration Standard 4

Sulfamethoxazole-d4 (benzene-d4),100 µg/mL,MeOH,1mL

Levoglucosan, 1000µg/mL, Solvent-Tetrahydrofuran, Unit 1mL, # of units-1, Cas.no. 498-07-7