Nicotinic acid, Stock solution system check EN12260

1,1,2-Trichloroethane, 1000 µg/ml, Methanol, 1ml

n-Hexadecane, ?13C: - 33.71, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 544-76-3

n-Alkanes C10-C25, all even and uneven, 16 analytes, 10x1mL