ISO 5263-3:2023
Pulps — Laboratory wet disintegration — Part 3: Disintegration of mechanical pulps at ≥85°C
This document specifies an apparatus and the procedures for the laboratory wet disintegration of mechanical pulps that exhibit latency except when brightness is measured. This apparatus and procedure can be used for preparation of the test portion in other International Standards dealing with pulps.
This document is applicable to all kind of mechanical pulps (i.e. mechanical, semi-chemical and chemi-mechanical pulps) exhibiting latency.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Apparatus
5 Preparation of test portion
6 Procedure
6.1 General
6.2 Disintegration and latency removal
6.3 Standard disintegrator
6.4 Circulation disintegrator
7 Test report
Annex A (normative) Construction of the standard disintegrator
Annex B (normative) Checking the standard disintegrator
Annex C (normative) Circulation disintegrator
Annex D (informative) The effect of latency in mechanical pulps
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Apparatus
5 Preparation of test portion
6 Procedure
6.1 General
6.2 Disintegration and latency removal
6.3 Standard disintegrator
6.4 Circulation disintegrator
7 Test report
Annex A (normative) Construction of the standard disintegrator
Annex B (normative) Checking the standard disintegrator
Annex C (normative) Circulation disintegrator
Annex D (informative) The effect of latency in mechanical pulps
Bibliography