A dish washing machine capable of improving spatial utilization of a washing tub through the enlargement of the washing tub. The ionomer or ionomer precursor typically includes plural acid functional groups, such as carboxyl or carboxylate groups, that react or form salts with the amino triazine. The use solution prepared from the detergent blend is particularly useful in cleaning draft beer lines, dairy lines, and the like. The core-shell nanoparticles are preferably formed by prolonged elevated-temperature annealing of nanoparticle alloys in an inert environment.