EN ISO 5350-2:2006

SLOVENSKI STANDARD
01-januar-2007
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SIST EN ISO 5350-2:2000
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Pulps - Estimation of dirt and shives - Part 2: Inspection of mill sheeted pulp by
transmitted light (ISO 5350-2:2006)
Faserstoff - Bewertung von Schmutz und Splittern - Teil 2: Prüfung von Handelszellstoff
in Bogenform mit dem Durchlicht-Verfahren (ISO 5350-2:2006)
Pâtes - Estimation des impuretés et buchettes - Partie 2: Examen des pâtes en feuilles
par lumiere transmise (ISO 5350-2:2006)
Ta slovenski standard je istoveten z: EN ISO 5350-2:2006
ICS:
85.040 Vlaknine Pulps
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 5350-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2006
ICS 85.040 Supersedes EN ISO 5350-2:1998
English Version
Pulps - Estimation of dirt and shives - Part 2: Inspection of mill
sheeted pulp by transmitted light (ISO 5350-2:2006)
Pâtes - Estimation des impuretés et bûchettes - Partie 2: Faserstoff - Bewertung von Schmutz und Splittern - Teil 2:
Examen des pâtes en feuilles par lumière transmise (ISO Prüfung von Handelszellstoff in Bogenform mit dem
5350-2:2006) Durchlicht-Verfahren (ISO 5350-2:2006)
This European Standard was approved by CEN on 14 August 2006.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
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EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 5350-2:2006: E
worldwide for CEN national Members.

Foreword
This document (EN ISO 5350-2:2006) has been prepared by Technical Committee ISO/TC 6
"Paper, board and pulps" in collaboration with Technical Committee CEN/TC 172 "Pulp, paper
and board", the secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by February 2007, and conflicting national
standards shall be withdrawn at the latest by February 2007.

This document supersedes EN ISO 5350-2:1998.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Endorsement notice
The text of ISO 5350-2:2006 has been approved by CEN as EN ISO 5350-2:2006 without any
modifications.
INTERNATIONAL ISO
STANDARD 5350-2
Third edition
2006-08-15
Pulps — Estimation of dirt and shives —
Part 2:
Inspection of mill sheeted pulp by
transmitted light
Pâtes — Estimation des impuretés et bûchettes —
Partie 2: Examen des pâtes en feuilles par lumière transmise

Reference number
ISO 5350-2:2006(E)
©
ISO 2006
ISO 5350-2:2006(E)
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ii © ISO 2006 – All rights reserved

ISO 5350-2:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Principle. 2
5 Apparatus . 2
6 Sampling and preparation of test pieces . 2
6.1 Sampling. 2
6.2 Selection of test pieces for inspection. 2
7 Procedure . 3
7.1 Determination of dry matter content. 3
7.2 Wetting of the test pieces . 3
7.3 Examination. 3
7.4 Classification of contraries. 3
8 Expression of results . 4
8.1 Calculation. 4
8.2 Results . 4
8.3 Precision. 4
9 Test report . 5
Annex A (normative) Comparison chart . 6
Annex B (informative) Instrumental procedure. 8
Bibliography . 11

ISO 5350-2:2006(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. Each 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 (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 5350-2 was prepared by Technical Committee ISO/TC 6, Paper, board and pulps, Subcommittee SC 5,
Test methods and quality specifications for pulps.
This third edition cancels and replaces the second edition (ISO 5350-2:1998, ISO 5350-2:1998/Cor.1:1999),
which has been technically revised.
With regard to ISO 5350-2:1998 and Technical Corrigendum 1:1999, the following changes have been made:
a) a note for problems concerning thick sheets has been added to the scope;
b) a more precise description of the instrumental procedure in informative Annex B was given;
c) editorial updating.
ISO 5350 consists of the following parts, under the general title Pulps — Estimation of dirt and shives:
⎯ Part 1: Inspection of laboratory sheets by transmitted light
⎯ Part 2: Inspection of mill sheeted pulp by transmitted light
⎯ Part 3: Visual inspection by reflected light using Equivalent Black Area (EBA) method
⎯ Part 4: Instrumental inspection by reflected light using Equivalent Black Area (EBA) method

iv © ISO 2006 – All rights reserved

ISO 5350-2:2006(E)
Introduction
This part of ISO 5350 is based upon visual inspection. Informative Annex B is used when the inspection is
performed by instrumental devices. For the time being, though, visual inspection provides the basis for this
part of ISO 5350. This will eventually be changed when more experience with instrumental devices is gained,
and it has been shown that such equipment can estimate dirt and shives to an acceptable level of precision at
least equal to visual inspection.
Estimation of dirt and shives by a visual technique is a well-established method in the pulp and paper industry,
and the estimation of these contraries is important for trade purposes.
This part of ISO 5350 is complementary to ISO 5350-1, which concerns visual inspection of laboratory sheets
by transmitted light, and ISO 5350-3, which concerns visual inspection by reflected light.
ISO 5350-4 is based on automatic inspection by reflected light.

INTERNATIONAL STANDARD ISO 5350-2:2006(E)

Pulps — Estimation of dirt and shives —
Part 2:
Inspection of mill sheeted pulp by transmitted light
1 Scope
This part of ISO 5350 specifies a method for the estimation by transmitted light of the visible dirt and shives in
pulp manufactured in sheets.
It does not apply to unbleached kraft pulps or to any other sheeted pulps that are too opaque to allow for the
estimation of the minimum size or for minimum contrast specks to be counted, in accordance with this part of
2 2
ISO 5350. The maximum grammage for most pulp sheets is in the range 800 g/m to 1 000 g/m .
If the sheets of the mill sheeted pulp have high grammage or are very opaque for other reasons, ISO 5350-1
should be applied.
NOTE For thick sheets, with highly textured surfaces and/or with density variations, wetting the sheet will cause
optical variations, called lens distortions, that will distort the perceived size of a dirt speck, thus reducing the precision of
the size estimation. Alternatively, use ISO 5350-1 to disintegrate the sheet and to prepare laboratory sheets for the size
estimation.
This part of ISO 5350 is not intended for recycled pulp.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 638, Pulps — Determination of dry matter content
ISO 7213, Pulps — Sampling for testing
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
sheet
a sheet of pulp taken from a bale, or a part of a roll of pulp
3.2
test piece
an area taken for inspection
ISO 5350-2:2006(E)
3.3
contrary in pulp
any unwanted particle, of spe
...