BS 6275-1:1982

National foreword
Cooperating organizations
Method
0 Introduction
1 Scope and field of application
2 References
3 Definition
4 Graphical symbols
5 General procedure
6 Test equipment
7 Test conditions accuracy
8 Filter performance test circuit validation
    procedures
9 Preliminary preparation
10 Filter performance test
11 Data accuracy
12 Calculations
13 Data presentation
14 Criteria for acceptance
15 Summary of designated information
16 Justification statement
17 Test/production similarity
18 Identification statement (Reference to this
    International Standard)
Annex
A Discussion of filtration performance, testing and
    test results
Tables
1 Test conditions accuracy
2 Data accuracy
3 Compilation of filter discrimination data
Figures
1 Typical filter performance test circuit
2 A typical filter performance test system
3 Filter element multi-pass test report sheet
4 Procedural diagram for validation
5 Procedural diagram for preliminary preparation
6 Procedural diagram for filter performance test
7 Procedural diagram for data analysis and
    presentation
8 Typical diffuser designs
9 Expected range in filtration ratio due to test (not
    element) variations
10 Summary and evaluation of filtration ratio
    reproducibility
11 Summary and evaluation of air cleaner fine test dust
    capacity reproducibility
12 Summary of test verification data and procedural
    control chart

Describes a multi-pass filtration performance test with continuous contaminant injection for fine filter elements. Also includes a procedure for determining the contaminant capacity, particulate removal characteristics and pressure loss.