The estimated sign, e, also referred to as the e-mark or "quantité estimée" (Unicode U+212E), can be found on some pre-packed goods in Europe and Australia. Its use indicates that the packaging fulfils European Union Directive 2009/34/EC.
The scope of the directive is limited to packaging that has a predetermined nominal quantity of between 5 grams (0.18 oz) and 10 kilograms (22 lb) or 5 millilitres (0.18 imp fl oz; 0.17 US fl oz) and 10 litres (2.2 imp gal; 2.6 US gal); is filled without the purchaser present, and where the quantity cannot be altered without opening or destroying the packaging.
The estimated sign indicates that:
The tolerable negative error is related to the nominal quantity and varies between 9 per cent on packages nominally 50 g (1.8 oz) or 50 ml (1.8 imp fl oz; 1.7 US fl oz) or less, to 1.5 per cent on packages nominally 1 kg (2.2 lb) or 1 litre (0.22 imp gal; 0.26 US gal) or more. The tolerable error decreases as nominal quantity increases, and is done by alternating intervals where there is a percentage error and intervals where there is a fixed error (and thus over those intervals the percentage error decreases).
The sign looks like a stylised lowercase "e" and its shape, e, 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:
Error tolerance decreases as nominal quantity increases, by alternating intervals of a given percentage error with intervals of a given amount error: these interpolate between the stepwise 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.
in g or ml
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 0.1 g or 0.1 ml.