clean collection

Failure to thoroughly clean collection tubing may lead to mold growth within the tubing.

The world's largest vacuum cleaner collection, whose owner could tell any vacuum cleaner from its sound alone (view here)

The feeling of jet-set glamour was certainly there at Gianfranco Ferre, where his clean collection offered a haughty elegance.

With mountain ranges falling out of the sky, with cities shattered by earthquakes before they were obliterated by monstrous things from heaven, there could not possibly be a clean collection of all survivors.

The result was a masculine, clean collection in which every look seemed to work, from the rich velvets with an underlying iridescence to the dandyish frock coats to the lean trousers that sometimes slit to cover the shoes.