GB/T 7962.8-2010 in English

《GB/T 7962.8-2010无色光学玻璃测试方法 第8部分：气泡度》由TC419（全国仪表功能材料标准化技术委员会）归口，主管部门为中国机械工业联合会。

1 Scope

This part of GB/T 7962 specifies the inspection methods, test steps and data processing for the bubble of colourless optical glass.

This part is applicable to the inspection on the bubble of colourless optical glass.

2 Normative references

The following documents contain provisions which, through reference in this part of GB/T 7962, constitute provisions of this part. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest editions apply to this part.

GB/T 903 Colorless optical glass

3 Terms and definitions

For the purposes of this part, the following term and definition apply.

3.1
extent of bubble
extent of inclusions such as bubbles and stones contained in every 100cm3 glass, including its diameter and the total sectional area of all inclusions such as bubbles and stones

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Sample
7 Test steps
8 Data processing