Sentence:  <WSD>Receptacles</WSD> used for storing inedible material must be of such material and construction that their use will not result in the adulteration of any edible product or in the creation of insanitary conditions. Such <WSD>receptacles</WSD> must not be used for storing any edible product and must bear conspicuous and distinctive marking to identify the permitted uses. 
Meaning of the word marked with <WSD> tags:  A container.