GB/T 28628-2012Test method for air ion concentration of materials (English PDF)

Foreword

This standard is drafted in accordance with regulations provided in GB/T 1.1-2009.

1 Scope

This standard specifies the terms and definitions, principles, test systems, test conditions, sample preparation, test procedure, calculation results, and test reports of test method for air concentration of materials.

This standard applies to materials which can concentrate air ion, such as paint, panel, wallpaper, and putty.

2 Normative references

The articles contained in the following documents have become part of this document when they are quoted herein. For the dated documents so quoted, all the modifications (Including all corrections) or revisions made thereafter shall be applicable to this document.

JC/T 412.1-2006 Fiber cement flat sheets Part 1: Non-Asbestos Fiber cement flat sheets

3 Terms and definitions

The following terms and definitions apply to this document.

4 Principles

Apply certain voltage to ion collector, so as to form an electric field to capture air ion. Leak the captured charge into a capacitor though leakage circuit. Then measure the air ion concentration of materials by continuously detecting the voltage change caused by air ion concentration of materials which is captured by capacitor.

5 Test system

10 Test reports

The test report shall at least provide the following contents.

- Number of this standard;

- Test samples, including sample name, sample volume, sample preparation and sample type;

- Test environmental conditions, including temperature, relative humidity and the test date;

- Testing personnel;

- Test results, including measured value of air negative (positive) ion of samples, measured value of blank air negative (positive) ion and Air negative (positive) ion concentration of materials.

- Any factors that may affect the test result. […]