Metformin-d6 HCl, 1000µg/ml in MeOH, 1ml

Potassium perfluoro(2-ethoxyethane)sulfonate, 1.2ml x 50ug/ml, methanol

6-Nitrochrysene-d11, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-10, Cas.no. 203805-92-9

Dibromostyrene (unspecified bromination),1000 µg/mL,isooctane,1mL,