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<br /> B.3. UNITS-WEIGHT, MEASURE. A declaration of quantity (a) in units
<br /> of weight shall be in terms of the avoirdupois poundor ounce; (b) in units
<br /> of liquid measure shall be in terms of the United States gallon of 231 cubic
<br /> inches or liquid-quart, liquid-pint, and fluid-ounce subdivisions of the
<br /> gallon, and shall express the volume at 68° F (20° C) except in the case
<br /> of a commodity that is normally sold while frozen or refrigerated, when the
<br /> declaration shall express the volume at the temperature normally prevailing
<br /> when such commodity is sold; (c) in units of linear measure shall be in
<br /> terms of the yard, foot, or inch; and (d) in units of dry measure shall be
<br /> in terms of either the United States bushel of 2,150.42 cubic inches or peck,
<br /> dry-quart, and dry-pint subdivisions of the bushel, or the United States
<br /> standard barrel of 7,056 cubic inches or of three-quarters, one-half and one-
<br /> third barrel subdivisions: Provided, That, in the case of drugs, in lieu of
<br /> any requirement to the contrary, the declaration of quantity may be in terms
<br /> of a unit of the apothecaries or metric system of weight or measure: And pro-
<br /> vided further That, in the case of a commodity packed for export shipment, the
<br /> declaration of quantity may be in terms of a system of weight or measure in
<br /> common use in the country to which such shipment is to be exported.
<br /> B.4. UNITS WITH TWO OR MORE MEANINGS. when any unit of weight or
<br /> measure having two or more distinct meanings is employed in a declaration of
<br /> quantity, the declaration shall identify the particular meaning of the term
<br /> as it is employed in the declaration. For example, distinction shall be made
<br /> between ''avoirdupois" and "fluid" ounces, and between "liquid" and "driquarts
<br /> and pints. However, such distinction may be omitted when, by association of
<br /> terms (as in "1 pound 4 ounces' or `'l pint 8 fluid ounces") , the proper meaning
<br /> is obvious.
<br /> B.S. PRESCRIBED UNITS. A declaration of quantity shall be expressed
<br /> in terms of the largest whole unit of weight or measure (for example, 1 quart
<br /> liquid shall be expressed as "1 quart liquid'' and not as "2 pints liquid"
<br /> or '32 fluid ounces") . However, when this results in a whole number and a
<br /> fraction, the fraction may be expressed in its equivalent in the next smaller
<br /> whole unit (for example, 1 3/4 quarts liquid may be expressed as "1 quart
<br /> 1 1/2 pints liquid" or "1 quart 1 pint 8 fluid ounces,'` but not as '.'lquart
<br /> 24 fluid ounces"; 1 1/4 pounds may be expressed as "1 pound 4 ounces'') : Pro-
<br /> vided, That, if there exists with respect to a particular commodity, a firmly
<br /> established general consumer usage and trade custom to express the declaration
<br /> of quantity as a fraction of a unit of weight or measure larger than the toal
<br /> quantity being declared or as a number of units smaller than the largest whole
<br /> unit of weight or measure involved, the declaration, if informative to con-
<br /> sumers, .tmay be made in accordance with such usage and custom.
<br /> B.6. REDUCTION OF FRACTIONS. Declarations of quantity may employ
<br /> only binary-submultiple common fractions or decilmal fractions. A common
<br /> fraction shall be reduced to its lowest terms, and, except in the case of
<br /> drugs, a decimal fraction shall not be carried out to more than two places:
<br /> Provided, That, if there exists, with respect to a particular commodity, a
<br /> firmly established general consumer usage and trade custom contrary to the
<br /> requirement for reduction of a common fraction to its lowest terms, the
<br /> declaration may be made in accordance with such usage and custom.
<br /> B.7. SUPPLMENTARY DECLARATIONS.
<br /> B.7.1. METRIC SYSTEM. A declaration of weight or measure in U. S.
<br /> customary units may be supplemented by a declaration in units of the metric
<br /> system.
<br /> B.7.2 COUNT TO BE SUPPLEMENTED. A declaration of quantity in terms
<br /> of count shall be supplemented by a declaration of the weight, measure, or size of
<br /> the individual units of the commodity, or of the total weight or measure of
<br /> the commodity, unless a declaration of count alone is fully informative to
<br /> the consumer.
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