What are the standards that the warranty of merchantability requires to be met?

Sales contracts contain an implied warranty of merchantability, which requires that the following standards be met:
 The goods must be fit for the ordinary purpose for which they are used.
 The goods must be adequately contained, packaged, and labeled.
 The goods must be of an even kind, quality, and quantity within each unit.
 The goods must conform to any promise or affirmation of fact made on the container or label.
 The quality of the goods must pass without objection in the trade.
 The goods must meet a fair average or middle range of quality.