Pulps. Estimation of dirt and shives Inspection of mill sheeted pulp by transmitted light

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-10-2006

Publisher

British Standards Institution

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

Describes a method for the estimation by transmitted light of the visible dirt and shives in pulp manufactured in sheets.

This part of ISO5350 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 ISO5350. The maximum grammage for most pulp sheets is in the range 800g/m² to 1000g/m².

If the sheets of the mill sheeted pulp have high grammage or are very opaque for other reasons, ISO5350-1 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 ISO5350-1 to disintegrate the sheet and to prepare laboratory sheets for the size estimation.

This part of ISO5350 is not intended for recycled pulp.

Committee	PAI/11
DevelopmentNote	Supersedes BS 7421(1991) & 97/120476 DC (03/2005) Supersedes 05/30124046 DC (10/2006) Reviewed and confirmed by BSI, May 2015. (05/2015)
DocumentType	Standard
Pages	22
PublisherName	British Standards Institution
Status	Current
Supersedes	BS EN ISO 5350-2:1998 05/30124046 DC : DRAFT JUN 2005 97/120476 DC : JAN 97 BS 7421:1991

Standards	Relationship
NEN EN ISO 5350-2 : 2006	Identical
UNE-EN ISO 5350-2:2007	Identical
EN ISO 5350-2:2006	Identical
I.S. EN ISO 5350-2:2007	Identical
UNI EN ISO 5350-2 : 2006	Identical
DIN EN ISO 5350-2:2006-11	Identical
SN EN ISO 5350-2:2008	Identical
NS EN ISO 5350-2 : 2ED 2006	Identical
NBN EN ISO 5350-2 : 2006	Identical
NF EN ISO 5350-2 : 2006	Identical
ISO 5350-2:2006	Identical
ISO/IEC TR 19764:2005	Identical

ISO 638:2008	Paper, board and pulps Determination of dry matter content Oven-drying method
ISO 7213:1981	Pulps Sampling for testing

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BS EN ISO 5350-2:2006

Pulps. Estimation of dirt and shives Inspection of mill sheeted pulp by transmitted light

Table of Contents

Abstract

Scope

General Product Information

International Equivalents

Standards Referencing This Book

Category

Subcategory