Potassium (K)

n-Pentacosane, ?13C: -28.21, 150ug/ml, Solvent-cyclohexane, Unit 1mL, # of units-10, Cas.no. 629-99-2

Potassium butylxanthate (as butylxanthate acid)

Perfluoro-4-methyloctanoic acid, 1.2ml x 50ug/ml, methanol