beta-Endosulfan-d4 (1,1,5,5-d4),100 µg/mL,n-nonane,1mL,

n-Pentacosane, ?13C: -28.21, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no. 629-99-2

Tri-p-tolylphosphate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 78-32-0

Acenaphthene