331/2000 Sb.
DECREE
The Ministry of industry and trade
of 6 May 1999. September 2000,
laying down the requirements relating to bottles used as measuring
containers for prepackaged goods
The Ministry of industry and trade shall determine in accordance with section 27 of Act No. 506/1990
Coll. on metrology, as amended by Act No. 121/2000 Coll. (hereinafter the "Act")
to implement section 9a of the law:
§ 1
(1) this Decree lays down the requirements on bottles used as measuring
packaging (hereinafter referred to as "bottles"), which must be satisfied only if the manufacturer
It intends to, at its option to label the bottle with the symbol "e".
(2) Cylinders that meet the requirements of this order can be marked
the symbol "e", whose graphic representation set out in annex 3 to this
the Decree.
§ 2
The cylinder must be made of glass or any other material,
that has such rigidity and stability that it offers the same metrological
guarantees as glass. The cylinder must satisfy the following conditions:
and are provided with a stopper or) structurally made so that they can be
provided with a stopper,
(b)) are intended for the storage, transport or delivery of liquids,
(c)) have a nominal capacity from 0.05 litres in 5 litres inclusive, and
(d)) have metrological characteristics (design characteristics and
uniformity of manufacture) such that they can be used as bottles, i.e.. When
are filled to the specified level or to a specified relative
part of the volume, the percentage of justified their volumes can be
measured with sufficient accuracy.
§ 3
Additional requirements on bottles and methods of their implementation are listed in the annex
No 1 to this notice.
§ 4
(1) the marking requirements of the bottles with the symbol "e" are set out in annex 1 to the
This Decree.
(2) the cylinder on which is located the symbol "e" must be subject to
metrological inspection by the Czech metrology institute ^ 1)
the conditions that are specified in annexes 1 and 2 to this
the Decree.
§ 5
This Decree shall enter into force on 1 January 2000. July 2001.
Minister:
doc. Ing. Gregr, r.
Č. 1
REQUIREMENTS FOR BOTTLES
1.
The bottles are characterized by the following capacities which are always
specified for a temperature of 20 ° C:
1.1 nominal capacity Vn is the volume that is marked on the bottle; It's
the volume of liquid, which is assumed to be contained in a bottle when it is
bottle filled in accordance with the terms and conditions of use for which it is intended;
1.2 the brim capacity bottle is the volume of liquid that the bottle contains,
When it is filled to the brim;
1.3 the actual volume of the cylinder is the volume of the liquid that is in the bottle in the
fact included when it is filled exactly under the conditions in theory
corresponding to the nominal capacity.
2.
There are two methods of filling a bottle:
(1) to a constant level,
(2) to a constant vacuity.
The distance between the theoretical level of performance on the nominal value and
the surface of the filling to the brim to brim capacity, and the difference between
aligned volume and nominal volume, known as an expansion volume or
the volume of empty space, obviously must be constant for all
bottles of the same type, that is, for all the bottles that were made
According to the same design.
3.
To facilitate compliance with the abovementioned requirements while respecting the usual
uncertainties in the performance, for the purpose of measuring the volume of the contents of the bottles with the appropriate
precision and in particular with the accuracy that is required by regulations
applicable to prepackages shall be permissible deviation (positive
or negative) the volume of the cylinder, i.e.. the greatest differences permitted (positive or
negative) at a temperature of 20 ° C and in terms of the checks that are
listed in annex No. 2, between the actual capacity and the nominal capacity Vn
in the following table:

The nominal capacity Vn Greatest tolerance
in millilitres as% of Vn in millilitres

from 50 to 1003
from 100 to 200 3
from 200 to 3006
from 300 to 500 2
from 500 to 1 00010
from 1 000 to 5 000 1

The largest, the tolerance for the brim capacity shall be the same as the
the largest, the tolerance for the corresponding nominal capacity.
The systematic exploitation of tolerances is not allowed.
4.
In practice, the actual volume of the check must be carried out so that the bottles are
shall determine the quantity of water at a temperature of 20 ° C that the bottle actually contains,
when filled to the level theoretically corresponding to the nominal capacity.
Control can also be made an indirect way a method whose
accuracy is equivalent to.
5.
Each cylinder manufacturer must submit a symbol by which it can be
identified, the Bureau of standards, metrology and
testing (hereinafter referred to as "the authority") for the purpose of approval. If the Office symbol
approve, he shall within one month inform the other competent
orgány2). The manufacturer shall, on his own responsibility, affix the bottles
the symbol "e". This symbol must be at least 3 mm high.
6.
Statistical inspection must be carried out in accordance with the principles of
acceptance sampling methods used. The effectiveness of acceptance must be
comparable to the effect of the reference method specified in annex No. 2.
7.
This Decree is without prejudice to the competence of supervisory and other bodies
the State Government provided for by the law.
8.
Bottle shall bear the following indelible, easily legible and
visible data:
8.1 on the side, on the bottom rim or on the bottom:
8.1.1 the indication, which indicates its nominal capacity in litres, centilitres
or ml, digits at least:
6 mm high, if the nominal volume is greater than 100 cl;
4 mm high if the nominal volume is equal to or less than 100 cl but
greater than 20 cl; and
3 mm, if the nominal volume of not more than 20 cl.
For this indication is followed by the symbol for the unit of measurement used or where it
It is appropriate, the drive name under a special legal předpisu4);
8.1.2 the tag that identifies the manufacturer as prescribed in point 5;
8.1.3 the symbol prescribed in paragraph 5;
8.2 on the bottom or on the bottom rim, in such a way that does not cause
disorientation in relation to the abovementioned data, the figures of the same
the minimum height, such as numbers, which is given the appropriate
nominal capacity, according to the method or methods of filling for which the bottle is
designed for:
8.2.1. an indication, which indicates the brim capacity expressed in centilitres and
is not accompanied by the symbol cl,
8.2.2 or an indication, which indicates the distance in millimetres from the surface
the brim level filling the corresponding to the nominal capacity,
This is followed by the symbol mm.
Additional information may be listed on the bottle, provided that they do not cause
disorientation in relation to the mandatory data.
Č. 2
PROCEDURES OF METROLOGICAL CONTROL
This annex lays down the procedures for the statistical inspection of bottles to verify
compliance with the requirements of section 4 and part 6 of Annex No. 1.
1.
METHOD OF SAMPLING
A selection of bottles of the same design and production will be removed from the levy,
which basically corresponds to the hour's production.
If the result of selective control of benefit corresponding to the hour's production
is not acceptable, you may make a second test based either on another
selection of dose corresponding to production in the longer term, or where
production was under the control of recognized by orgánem2), on the
based on the results recorded on the inspection sheets manufacturers.
The number of bottles that make up the random selection must be 35 or 40; Depending on the
which of the two methods detailed below in section 3, was elected
competent orgánem2) for the processing of the results.
2.
MEASUREMENT OF THE VOLUME OF THE CYLINDERS THAT MAKE UP THE RANDOM SELECTION
The cylinder must be considered empty.
The bottle is filled with water at a temperature of 20 ° C, the density is known to
the corresponding level control method used.
Then gradually weighed filled with bottles, and each value is xji
It records.
Control measurements shall be carried out using a set gauge that is
suitable for effecting the necessary operations.
Measurements of the volume shall not exceed one fifth of the world's largest
permissible deviation corresponding to the nominal capacity of the cylinder.
3.
USE OF SELECTIVE CONTROL
3.1 the use of methods based on the selective standard deviation
The selection range is 35.
3.1.1 shall be calculated (see 3.1.4.):

3.1.1.1 sample diameter x actual volumes xi bottles in
the selection;
3.1.1.2. the estimation of the standard deviation s actual volumes xi bottles in a batch.
3.1.2 Furthermore shall be calculated:
3.1.2.1 the upper limit Ts: the sum of the indicated capacity (see annex No.
1, section 8) and the maximum permissible deviation corresponding to this capacity.
3.1.2.2 the lower limit Ti: the difference between the indicated capacity (see
Appendix 1, section 8) and the maximum permissible deviation of the corresponding
This capacity.
3.1.3. Acceptance criteria:
The dose must be declared to conform to this Decree,

If the numeric values of the x and at the same time meet these
the three inequalities:

x + k. = T, with <
with

xto. with > = T,
(I)
with < = F (TT)
with i
where k = 1.57 and F = 0.266.

3.1.4 calculate the sample average of x and estimate STD
deviations with the benefits:
Calculations are performed according to the following formulas:
the sum of the actual volume of measuring 35 x = sum of x,
(I)
the sum of x
 i
Select the diameter measuring 35 x =,
35
2
the sum of squares of x, 35 sum measurement
(I)
2
the square of the sum of 35 measurements (sum of x)
(I)
1 2
and then(sum of x),
35 i
2 1 2
the difference of the sum of SC = sum of x(sum of x),
even 35 even
variance estimation of the actual volumes of the cylinders in the batch
SC
nu =
34
an estimate of the standard deviation – hence the actual volumes
bottles in a dose of s = square root of Nu.
To facilitate the calculation of sample characteristics, it is recommended
use for example. pocket calculators with the statistical utility
(and for the calculation of the standard deviation of the sampling use the button
With, or sigma).
n1, n1
3.2 using the method based on the average margin
The selection range is 40 bottles.
3.2.1 shall be calculated (see 3.2.4):

3.2.1.1. sample diameter x actual volumes xi bottles in
the selection,

3.2.1.2 average margin R actual volumes xi bottles
in the selection.
3.2.2 Furthermore shall be calculated:
3.2.2.1 the upper limit Ts: the sum of the indicated capacity (see annex No.
1, section 8) and the largest tolerances corresponding to this capacity.
3.2.2.2. The lower limit Ti: the difference between the indicated capacity (see
Appendix 1, section 8) and the greatest tolerance matching
This capacity.
3.2.3 Acceptance criteria:
The dose must be declared to conform to this Decree,
 
If the numeric value of x and R meet at the same time these
the three inequalities:
 
x + k ' = Ts, R <
 
xk ' R > = Ti,

= F ' R < (Ts)
where k ' = 0.668 and F ' = 0.628.
 
Calculation of the sample average of x and the average margin of R for
40 bottles in the selection and for a range of subsets of 8:


3.2.3.1. The value of x is obtained by the following procedure:
the sum of the actual volume of measuring 40 x = sum of x
(I)
the sum of x
 i
Select the diameter of these 40 measurement x =.
40

3.2.3.2. The value of the average margin R is obtained by
the procedure:
A selection in chronological order with
be divided into 8 subgroups, which is
five bottles.
Another calculation is performed in the following steps:
for each subset of the down selection margin
i.e.. the difference between the measured real greatest
and the smallest of the five bottles in the capacity of a given subset;
This gets the 8 values range: R1, R2, ..., the R8;
the sum of the margin eight subgroups
sum R = R + R + ... + R.
I 1 2 8
1
Thus the average margin of R =a sum of R.
8 i
Č. 3
Graphic design of the symbol "e" for labeling bottles used as measuring
containers for prepackaged goods
The grid is not part of the symbol. Is used as an aid to determine the dimensional
the symbol.
1) section 14 of Act No. 506/1990 Coll., on weights and measures, as amended by Act No.
119/2000 Sb.