32In that regard, although Note 1 to chapter 29 of the CN permits the presence of impurities, it must be held that they are necessarily residual, in order not to affect the ‘separateness’ of the organic compound at issue. Indeed, as the Advocate General observed in point 31 of her Opinion, the reason for that tolerance is related to the fact that as a general rule 100% purity may not be technically possible.
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