SIST EN ISO 801-1:2000

SLOVENSKI STANDARD
SIST EN ISO 801-1:2000
01-april-2000
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SRYH]DQHYEDOH,62
Pulps - Determination of saleable mass in lots - Part 1: Pulp baled in sheet form (ISO
8001-1:1994)
Zellstoffe - Bestimmung des Handelsgewichtes von Lieferposten - Teil 1: Zellstoffbogen
in Ballen (ISO 801-1:1994)
Pâtes - Détermination de la masse marchande des lots - Partie 1: Balles de pâtes en
feuilles (ISO 801-1:1994)
Ta slovenski standard je istoveten z: EN ISO 801-1:1996
ICS:
85.040 Vlaknine Pulps
SIST EN ISO 801-1:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 801-1:2000

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SIST EN ISO 801-1:2000

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SIST EN ISO 801-1:2000

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SIST EN ISO 801-1:2000
INTERNATIONAL ISO
STANDARD
801-1
Second edition
1994-08-0 1
Pulps - Determination of saleable mass in
lots -
Part 1:
Pulp baled in sheet form
PS tes - Determination de Ia masse marchande des lots -
Partie 1: Balles de p&e en feuilles
Reference number
ISO 801-1: 1994(E)

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SIST EN ISO 801-1:2000
ISO 801=1:1994(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide
federation of national Standards bodies (ISO member bodies). The work
of preparing International Standards is normally carried out through ISO
technical committees. Esch member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission
(1 EC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard ISO 801-1 was prepared by Technical Committee
ISO/TC 6, Paper, board and pulps, Subcommittee SC 5, Test methods
and quality specifications for pulp.
This second edition cancels and replaces the first edition
(ISO 801-1 :1979), of which it constitutes a technical revision.
ISO 801 consists of the following Parts, under the general title Pulps -
Determination of saleable mass in lots:
- Part 1: Pulp baled in sheet form
- Part 2: Pulps (such as flash-dried pulps) baled in slabs
- Part 3: Unitized bales
Annexes A and B of this part of ISO 801 are for information only.
0 ISO 1994
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronie or mechanical, including photocopying and
microfilm, without Permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1 211 Geneve 20 l Switzerland
Printed in Switzerland

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SIST EN ISO 801-1:2000
INTERNATIONAL STANDARD 0 ISO ISO 801=1:1994(E)
Pulps - Determination of saleable mass in lots -
Part 1:
Pulp baled in sheet form
or
1 Scope
- its saleable mass (2.7).
This patt of ISO 801 specifies a method for deter-
mining the dryness of a lot of pulp baled in sheet form
2.2 gross mass: The total mass of a bale, a part of
and for calculating its saleable mass.
a lot or a lot comprising
This method is applicable to all kinds of pulp baled in
- contents;
sheet form. lt does not apply to pulp baled in lots in
slab form or to pulp baled in unitized lots.
- wrappers (Pulp - Paper);
An example of a full certificate of analysis and related
- packaging wires or strappings.
calculations is given in annex A. Annex B gives de-
tails of equipment for marking the Position of speci-
2.3 oven-dry mass: The mass obtained on drying
men sheets in Sample bales.
pulp at 105 “C + 2 “C, until constant mass is reached.
-
2.4 absolute dryness: The ratio of the oven-dry
mass (2.3) of the pulp to its initial mass, expressed
2 Definitions
as a percentage.
For the purposes of this part of ISO 801, the following
2.5 air-dry mass: The mass of the pulp when its
definitions apply.
moisture content is in equilibrium with the ambient
atmosphere.
2.1 tot: The total number of bales of the same sort
of pulp of specific characteristics.
2.6 theoretical commercial dryness: A conven-
tional equilibrium value of 88 % or 90 % according to
The number of bales comprising a lot is indicated by
the country and/or commercial agreements?
the invoice or by agreement between the interested
Parties.
2.7 saleable mass: The gross mass (2.2) multiplied
by the absolute dryness (2.4) divided by the theoreti-
A lot of bales of pulp is said to be “with
cal commercial dtyness (2.6). Usually, it approximates
specif ication ” if it is accompanied by a certificate of
to the air-dry mass (2.5).
origin stating for each bale either
- its gross mass (2.2) and its absolute dryness 2.8 invoiced mass: The saleable mass (2.7) indi-
(2.4, cated by the vendor on the invoice.
1) If the air dryness is 90 %, the pulp contains 90 Parts by mass of absolutely dry fibres and 10 Parts by mass of water. For
an air dryness of 88 %, the corresponding figures are 88 and 12.
1

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SIST EN ISO 801-1:2000
ISO 801=1:1994(E)
3 Principle 5 Sample bales
From the lot, Sample bales are taken in number which
All the Sample bales shall be representative of the lot
is a function of the total number of bales in the com-
and for this purpose, so far as possible, these bales
plete lot and in accordance with a sliding scale. These
should be selected at random from all Parts of the lot.
Sample bales are weighed*) and collected in groups
In the absence of any other agreement between the
of six bales.
interested Parties, the available part of the lot to be
examined shall be not less than half the complete lot
Five specimen sheets are selected from each Sample
at the time of examination.
bale under defined conditions.
From each specimen sheet, a test piece is tut in the
If the bales have identification numbers relating to
form of ’a triangle, as indicated in clause 6.
several series, the Sample bales shall be selected as
far as possible in Proportion to the size of each of
The test pieces are we ighed and dri e d to C nt
these series.
mass to determine t heir oven-dry mas S
(2.3
The Sample bales shall be intact and damaged as little
The saleable mass (2.7) of the lot is then calculated.
as possible, and shall not include
- bales showing signs of definite drying or wetting,
4 Apparatus
as may happen with bales situated on the extemal
faces of a Stack;
4.1 Scale, suitable for weighing the bales to an ac-
- bales or wrappings of bales having deteriorated,
curacy of at least l/l 000.
or showing clear signs of accidental localized wet-
ting or loss;
4.2 Balance, suitable for weighing the test pieces - bales carrying traces of previous sampling;
to an accuracy of at least ‘l/5 000. The balance shall
- bales whose number is illegible or is not contained
have a capacity of at least 5 kg and a sensitivity of
in the specification, if this is a lot specified bale by
0,l g. Its weighing pan (or weighing table) shall be
bale.
wide enough to accommodate the test pieces so that
they do not protrude outside the rim of the pan.
The number of Sample bales to be taken is given in
NOTE 1 As the test pieces are weighed when still hot,
table 1.
they Cause an upstream flow of air around the weighing pan
and, in consequence, a negative error in the balance read-
Above 5 000, the minimum number to be taken is 100
ing. This error is minimized if the pan is wide enough so that
plus 1 % of the bales in excess of 5 000, the maxi-
no part of the test pieces protrudes outside the rim of the
mum number being 200 plus 1 % of the bales in ex-
pan.
cess of 5 000. In all cases, the total number of Sample
bales shall be a multiple of 6.
4.3 Equipment, for marking the Position of the
When the lot is relatively uniform, and the number of
specimen sheets to be selected (see annex B) and
bales rejected (exclusive of bales from the outer faces
the test pieces in these sheets, as well as for cutting
of the Stack) does not exceed 10 % of the minimum
them.
number of bales to be selected (see table 1), then the
minimum number shall be taken. Otherwise, the ana-
lyst shall decide, within the limits set in table 1, the
44 . Equipment, for storing at least 30 test pieces
number of bales to be selected.
to prevent them from gaining or losing mass before
weighing.
For frozen pulp, the sampling shall be postponed until
the bales have thawed, so that satisfactory test
4.5 Drying oven, with good Ventilation, and capable
pieces tan be tut from the sheets.
of being controlled at 105 “6 + 2 “C.
-
2) The mean of the gross mass of the Sample bales is considered as being the mean of the gross mass of all the bales in the
lot.
2

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SIST EN ISO 801-1:2000
0 ISO
ISO 80%1:1994(ET)
No. VI, the first sheet will be taken 1 /IO of the height
of the bale from the. top, and the last sheet will be
Table 1 - Number of Sample bales to be taken
l/lO of the height of the bale from the bottom. The
Number of Sample bales
Total number of bales in
Sample bale No. VII, being a part of the next group of
lot
six Sample bales, will recommence the cycle and be
min. max.
treated in the same way as the Sample bale No. 1, etc.
up to 100 12 24
101 to 200 18 36
NOTE 2 Pulp bales composed of sheets folded or in
201 to 300 24 48
juxtaposition. Pulp sheets are sometimes delivered folded
301 to 400 24 48
two or more times into laps to conform to the size of the
401 to 500 24 48
bale. In such cases, the word “sheet” should be interpreted
as applying to only one thickness of the lap. If several
501 to 600 30 60
sheets are folded into one lap, the test piece should be
601 to 700 30 60
drawn from the Sample sheet defined above. lt is advisable
72
701 to 800 36
to tut the pulp sheet(s) along the fold of the lap to deter-
72
801 to 900 36
mine the exact Position from which the specimen sheet
901 to 1 000 42 84
should be drawn.
1 001 to 2 000 48 96
2 001 to 3 000 60 120
Where the bales are composed of two adjacent sheet piles,
3 001 to 4 000 72 144
the two sheets in juxtaposition on the same level should be
4 001 to 5 000 96 192
considered as constituting one specimen sheet.
6 Procedure Bale Nos. Bale Nos. Bale Nos. Bale Nos. Bale Nos. Bale Nos.
1, VII, II, VIII, Ill, IX, IV, x v, XI, VI, XII,
XIII, etc. XIV, etc. XV; etc. XVI, etc. XVII, etc. XVIII, etc.
. 1 . . 1
6.1 Weighing of Sample bales
a 1 w 1 I
c i
1 r 1 1 1
I 1
I I I I
a
I
1 I t I
Determine the gross mass of each Sample bale sep-
I 1
arately and report the results to an accuracy between
I 1 I I
I
a
I a 1 I
1/500 and l/l 000; report, if possible, their marks and
a I
1 I 1 a 1
references in the Order of their weighing. Check the
scale (4.1) before the weighings and during the course
of the Operation.
If the moisture content of the sheets of pulp serving
as wrappers obviously differs from that of the rest of
a I l
1
1
the bale, or if the wrappers are invoiced separately,
1 ! ;
m . .
test them separately in accordance with 7.2.
6.2 Selection of specimen sheets
Select five specimen sheets from each Sample bale,
as specified below, as soon as possible after weigh-
ing.
Figure 1 - Diagram indicating the Position from
which specimen sheets shall be taken
Draw five sheets from each Sample bale, the distance
between the sheets being constant and equal to
one-fifth of the total thickness of the bale (see the
note). DO not take the sheets from the same positions Select all specimen sheets very carefully, especially
in each bale, but select them according to the pro- those within about 5 cm from the top and the bottom
cedure specified below and illustrated in figure 1. In
of the bale.
Sample bale No. 1, the first sheet is taken 1 cm from
the extreme top, and the last sheet (the fifth) will be
The specimen sheets tan be selected easily with the
one-fifth of the thickness of the bale from the bottom. aid of an appropriately graduated measuring rod (see
In Sample bales Nos. II, Ill, IV, V and VI, each sheet is annex B). Place the rod in an inclined Position against
taken from a slightly lower Position (actually 1/50 of the side of the bale, so that its lower end is at the
the thickness of the bale) than the corresponding level of the bottom face on the bale, and the upper
sheet of the preceding bale; thus, in Sample bale line at the Ievel of its top. The faces on the rod cor-
3

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SIST EN ISO 801-1:2000
ISO 801=1:1994(E) Q ISO
respond to the six bales in a bale group and the lines Cut test pieces in the shape of triangles in which the
correspond to the five specimen sheets in the table. apices are at the midpoint of the sheets and where
the lengths of the bases of the triangles are
If the top and bottom of the bales tan be established
1 1
1 2
by means of numbers or other identifying marks, Start
and
75 75
I I
the selection of specimen sheets from the top of the
first group of six Sample bales and from the bottom
where
of the second group of six Sample bales. Follow this
alternating procedure for successive groups of six
is the length of the long side of the sheet;
I,
bales.
is the length of the short side of the sheet.
12
6.3 Cutting the test pieces
The test piece tut from the first specimen sheet has
one side which coincides with a sheet diagonal
(starting Point shown in figure 2).
6.3.1 General
If the specimen sheets vary in grammage, and, hence
From each of the specimen sheets selected, take a
also in thickness, compensate this by cutting nar-
triangular test piece by making two straight cuts
rower test pieces from the thicker sheets and wider
through the sheet from the edge to the midpoint.
ones from the thinner sheets.
These triangles (see note 3) have their bases at the
outside edges and apices at the midpoint of the
Cut the test pieces from the consecutive specimen
sheets. All test pieces used in the test have either the
sheets as indicated in figure 2. These five triangular
same area, or a constant apex angle of 24 ”.
pieces together form the Sample from bale No. 1.
lt is very important that each specimen sheet remain
In Sample bale No. II, tut the test pieces from con-
in contact with
...