Description: NoAL is a concentrated adental tray cleaner. It is suitable for all types of trays and will remove most stubborn deposits quickly. NoAL contains chelating agents that are medically safe. That means that it’s safer for the dentist and the dental team. NoAL is diluted to a 1:10 ratio so one litre will go a long way. NoAL is available in 1L or 5L reusable Willow containers ( Big NoAL).