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BS ISO 23742:2024

BS ISO 23742:2024

$142.49

Test method for the evaluation of permeability and filtration efficiency distribution of bag filter medium

Published By Publication Date Number of Pages
BSI 2024 28
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PDF Catalog

PDF Pages PDF Title
2 undefined
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Determination of sampling
4.1 General
4.2 Collection position, size and shape of representative sample sheets
4.3 Number of representative sample sheets
11 5 Preparation of specimen strips
5.1 General
5.2 Standard atmosphere for conditioning and testing
5.3 Conditioning of specimen strips
5.4 Size of specimen strips
12 6 Measurement method – Thickness
6.1 General
6.2 Apparatus
6.2.1 Thickness tester
6.2.2 Thickness gauge
6.3 Procedure
7 Measurement method – Area mass
7.1 General
7.2 Apparatus
7.2.1 Precision balance
13 7.2.2 Calibrated rule
7.3 Procedure
8 Measurement method – Gas permeability
8.1 General
8.2 Apparatus
8.2.1 Circular specimen holder
8.2.2 Clamping device
8.2.3 Guard ring device
8.2.4 Pressure gauge or manometer
8.2.5 Blower, fan or pump
8.2.6 Flowmeter, volumetric counter or measuring aperture
8.3 Procedure
14 9 Measurement method – Filtration efficiency (option)
10 Order of measurement sequence
11 Expression of distribution of each measurement item
15 12 Test report
16 Annex A (normative) Sampling survey theory based on normal distribution
17 Annex B (informative) Analysis example of measurement results
21 Annex C (informative) Example of relationship between exerting pressure and thickness distribution
22 Annex D (informative) Example of a test report
24 Annex E (informative) Example of a test report with measurement results
26 Bibliography

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BS ISO 23742:2024
$142.49