| bepalen van 2-pyridon-N-methylnicotinamide-ratio (verrichting) |   | bepalen van 2-pyridon-N-methylnicotinamide-ratio  |   | bepalen van ratio tussen 2-pyridon en N-methylnicotinamide bepalen van verhouding tussen 2-pyridon en N-methylnicotinamide
   |   | 2-pyridone/n'-methylnicotinamide ratio measurement  |  
  |  |