Sartorius arium® mini is designed for users who need low volumes of ultrapure water with next to zero maintenance. Resource-saving arium® mini can be used virtually independently of available conditions as it does not require connection to a feed water source and is highly compact. A special feature is Bagtank technology, in which pre-purified water in a bag is integrated into the system. This considerably extends the change-out intervals of the filter modules indispensable for ultra-purification of water. The system is operated via a touchscreen, and its water delivery point is illuminated to facilitate dispensing.