n-Tricosane, ?13C: -26.71, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no. 638-67-5

PCB No. 170, 100µg/ml in Cyclohexane, 5ml

(+/-)-Atenolol-d7 (isopropyl-d7), 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 29122-68-7

2,2',4-Trichlorobiphenyl,100 µg/mL,isooctane,1mL,