| http://www.w3.org/ns/prov#value | - This last stipulation applies only for those articles, machines, equipment or other contrivances that are constructed or modified after November 8, 1973.(6) [Reserved](7) An article, machine, equipment or other contrivance described in paragraph (c), (d) or (e) of this section used exclusively for chemical or physical analyses or determination of product quality and commercial acceptance provided
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