Extraction Standard Solution, in nonane/3.2% toluene, 1,2ml

n-Tetracontane, ?13C: -27.05, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 4181-95-7

Sulfanilic Acid-d4, 10mg

2,2',3,4,5-Pentachloro[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane