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The estimated sign, ℮, also referred to as the e-mark, is a mark that can be found on some pre-packed goods in Europe. The estimated sign indicates that the packaging is filled according to the European Union Directive 76/211/EEC (amended by 2007/45/EC). The scope of the directive is limited to packaging that has a predetermined nominal quantity of to or to , is filled without the purchaser present and of which the quantity cannot be altered without opening or destroying the packing material. The estimated sign indicates that: * the average quantity of product in a batch of packages shall not be less than the nominal quantity stated on the label; * the proportion of packages having a negative error greater than the tolerable negative error shall be sufficiently small for batches of packages to satisfy the requirements of the official reference test as specified in legislation; * none of the packages marked have a negative error greater than twice the tolerable negative error (since no such package may bear the estimated sign). The tolerable negative error is related to the nominal quantity and varies between 9% on packages nominally or or less, to 1.5% on packages nominally or or more. The tolerable error decreases as nominal quantity increases, and is done by alternating intervals where there is a fixed error (and thus over the interval the ''percentage'' error decreases) with intervals where there is a percentage error. The mark looks like a stylised lower-case "e" and its shape, ℮, is precisely defined by an EU directive. It must be placed in the same field of vision as the nominal quantity. The sign has been added to the Unicode list of characters at position U+212E. The estimated sign may be printed on a package if: * the quantity of product in the package and its labelling meet the requirements, and * the packer either measures the content of each package or carries out production checks in accordance with procedures recognized by the competent departments in the member state, and * the packer holds at the disposal of those departments the documents containing the results of such checks and corrections and adjustments that have been shown to be necessary. == Tolerable Negative Error == Error tolerance decreases as nominal quantity increases, by alternating intervals of a given ''percent'' error with intervals of a given ''amount'' error: these interpolate between the stairstep decreases in percentage error. The estimated sign indicates that the average quantity of product in a batch of packages shall not be less than the nominal quantity stated on the label. When using the table, the values of the tolerable negative errors shown as percentages in the table, calculated in units of weight or volume, shall be rounded up to the nearest one-tenth of a gram or millilitre. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Estimated sign」の詳細全文を読む スポンサード リンク
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