4-Bromo-2,3,7,8-tetrachlorodibenzofuran, 1.2ml x 50ug/ml, toluene

C20 Triaromatic sterane, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 81943-50-2

(S)-(-)-Cotinine, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 486-56-6

Demeton-S-methyl sulfon-d6,100 µg/mL,cyclohexane,1mL,