Foreword

Introduction

1Scope

2Normative references

3Terms and definitions

4Test equipment, accuracy and validation

4.1Measurement accuracy

4.2Test system

4.2.1System requirements

4.2.2Sampling

4.2.3Aerosol generator

4.2.4Aerosol challenge verification

4.2.5Airborne particles

4.2.6Neutralization

4.2.7Air flow meter calibration

4.2.8Repeatability

4.3Test conditions

4.4Validation

4.5Daily start-up procedures

5Test methods

5.1Performance test

5.1.1Air filter conditioning

5.1.2Pressure loss

5.2Efficiency test

5.2.1General

5.2.2Procedure

5.2.3Filter dust capacity

Annex ATest report (normative)

Annex BEfficiency data reduction (normative)

B.1Introduction

B.1.1General

B.1.2Symbols and subscripts used in all equations

B.2Correlation ratio

B.2.1Observed value — Correlation ratio

B.2.2UCL and LCL values — Correlation ratio

B.3Penetration

B.3.1Observed — Penetration

B.3.2UCL and LCL values — Penetration

B.4Calculations for unequal sample times

B.5Efficiency

B.6Poisson statistics and counting

B.6.1Theory

B.6.2Practice

B.6.3Recommendation

B.6.3.1Determination of confidence limits on a count

B.6.3.2Correlation Ratio

B.6.3.3Penetration

Annex CPressure loss data reduction (normative)

Annex DDetermination of maximum efficiency aerosol concentration (informative)

Annex ECheck lists for accuracy requirements, validation and routine operation (normative)

Annex FAerodynamic diameter (normative)

Annex GMethods for testing efficiency aerosol for proper neutralization (normative)

G.1Introduction

G.2General procedure

G.3Description of filters to be used

G.4Method 1 — Reduction of concentration/flow rate to minimize electret efficiency

G.4.1Procedure

G.4.2Analysis

G.4.3Action

G.5Method 2 — Adjustment of ion output to minimize electret efficiency

G.5.1General

G.5.2Procedure

G.5.2.1Excitation type

G.5.2.2Balancing

G.5.2.3Concentration

G.5.2.3.1Procedure

G.5.2.3.2Analysis

G.5.3Action

Bibliography