Chemical wave in the un-illuminated aminophenol-bromate beads system

We report observation of slow oscillations and slow waves in the aminophenol system. The system with slow oscillations in the stirred batch reactor does not always exhibit slow waves. The unperturbed system exhibits more than 2 days of wave activity, while the perturbed system shows about 5 days of wave activity. The longest lifetime of wave propagation stage and quiescent window were 30 and 11 h, respectively.