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BS ISO 5350-4:2006

BS ISO 5350-4:2006

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The latest, up-to-date edition.

Pulps. Estimation of dirt and shives Instrumental inspection by reflected light using equivalent black area (EBA) method

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

10-31-2006

Publisher

British Standards Institution

1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Sampling
   6.1 General
   6.2 Pulp sheets
   6.3 Slush or flash-dried pulp
7 Procedure
   7.1 General
   7.2 Calibration
   7.3 Examination
8 Expression of results
9 Precision
   9.1 General
   9.2 Repeatability
   9.3 Reproducibility
10 Test report
Annex A (normative) Equivalent Black Area (EBA) calculations
Annex B (normative) Calibration-plate information
Bibliography

Defines a method using instrumental inspection by reflected light for the estimation of visible dirt and shives in pulp manufactured in sheets, in terms of Equivalent Black Area (EBA) of dirt specks within the physical area range of 0,02 mm[2] to 3,0 mm[2].

This part of ISO5350 specifies a method using instrumental inspection by reflected light for the estimation of visible dirt and shives in pulp manufactured in sheets, in terms of Equivalent Black Area (EBA) of dirt specks within the physical area range of 0,02mm2 to 3,0mm2. Using the algorithm prescribed in this part of ISO5350, the maximum dirt size is limited to 3,0mm2. Extension to other speck sizes (for example, those greater than 3,0mm2 in physical area) may require changes in equipment, calculation procedures, or both, and is not covered in this part of ISO5350. This part of ISO5350 cannot be used for physical area measurements, since it may not correctly measure the dirt specks for that mode of measurement.

The specimen to be evaluated should have a brightness, as determined by ISO3688, of 30%or greater. It may be necessary to reform some pulp sheets into laboratory sheets, if the surface is too rough or textured.

This part of ISO5350 is also intended for recycled pulp.

Committee
PAI/11
DevelopmentNote
Supersedes BS ISO 15319 and 05/30122311 DC (10/2006) Reviewed and confirmed by BSI, May 2015. (05/2015)
DocumentType
Standard
Pages
20
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
ISO 5350-4:2006 Identical

ISO 5269-1:2005 Pulps Preparation of laboratory sheets for physical testing Part 1: Conventional sheet-former method
TAPPI T 563 : 2015 EQUIVALENT BLACK AREA (EBA) AND COUNT OF VISIBLE DIRT IN PULP, PAPER AND PAPERBOARD BY IMAGE ANALYSIS
ISO 3688:1999 Pulps — Preparation of laboratory sheets for the measurement of diffuse blue reflectance factor (ISO brightness)
ISO 7213:1981 Pulps Sampling for testing
ISO 5269-2:2004 Pulps Preparation of laboratory sheets for physical testing Part 2: Rapid-Kthen method

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Hardcopy - English
PDF - English
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