- Latest available (Revised)
- Original (As adopted by EU)

- Latest available (Revised)
- Original (As adopted by EU)

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This Annex lays down the procedures for the statistical checking of measuring container bottles in order to meet the requirements of Article 2 of the Directive and of Section 6 of Annex I.

A sample of measuring container bottles of the same design and the same manufacture shall be drawn from a batch corresponding, in principle, to an hour's production.

If the result of the check on a batch corresponding to an hour's production is not satisfactory, a second test can be carried out, based either on another sample from a batch corresponding to a longer period of production or, where production has been subject to a check recognized by the competent departments of the Member State, on the results recorded on the manufacturers' check-cards.

The number of measuring container bottles constituting the sample shall be 35 or 40, depending on which of the two methods of applying the results, detailed in Section 3 below, has been chosen by each Member State.

The measuring container bottles shall be weighed empty.

They shall be filled with water at 20^{o}C of a know density, up to the filling level appropriate to the method of checking used.

They shall then be weighed in full.

The check shall be carried out by means of a legal measuring instrument, suitable for effecting the necessary operations.

Error in measuring the capacity shall not be great er than one-fifth of the maximum permissible error corresponding to the nominal capacity of the measuring container bottle.

The number of measuring container bottles in the sample is 35.

3.1.2.1.

The upper limit T_{s}: the sum of the indicated capacity (see Annex I, Section 8) and of the maximum permissible error corresponding to this capacity.

3.1.2.2.

The lower limit T_{i}: the difference between the indicated capacity (see Annex I, Section 8) and the maximum permissible error corresponding to this capacity.

The batch shall be declared to comply with the Directive if the numbers

and s verify simultaneously the following three inequations:where k

=

1·57

and F

=

0·266

Calculate as follows:

the sum of the 35 actual capacity measurements x = Σx

_{i}the mean value of the 35 measurements

the sum of the squares of the 35 measurements Σx

_{i}^{2}the square of the sum of the 35 measurements (Σx

_{i})^{2}, thenthe corrected sum:

the estimated variance

Hence the estimated standard deviation:

The number of measuring container bottles in the sample is 40.

3.2.2.1.

the upper limit T_{s} the sum of the indicated capacity (see Annex I, Section 8) and the maximum permissible error corresponding to this capacity,

3.2.2.2.

the lower limit T_{i}:

difference between the indicated capacity (see Annex I, Section 8) and the maximum permissible error corresponding to this capacity.

The batch shall be declared to comply with the Directive if the numbers

and verify simultaneously the following three inequations:where k'

=

0·668,

and F'

=

0·628.

3.2.4.1.

to obtain

, calculate as follows:the sum of the 40 actual capacity measurements x

_{i}: Σ x_{i}the mean value of these 40 measurements:

3.2.4.2.

To obtain

Divide the sample, in chronological order of selection, into eight sub-samples of five measuring container bottles each.

Calculate as follows:

the range of each of the sub-samples, i.e. the difference between the actual capacity of the largest and the smallest of the five bottles in the sub-sample; eight ranges are thus obtained: R

_{1}; R_{2}; ... R_{8}the sum of the ranges of the eight sub-samples:

Σ R

+ ... + R_{i}= R_{1}+_{8}

The average range

is therefore:#### PrintThe Whole Directive

#### PrintThis Annex only

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