GB/T 4688-2020 "Paper, board and pulps – Analysis of fibre furnish" is applicable to various types of paper, board, and pulps. It specifies methods for identifying fiber types and determining their mass fraction or volume fraction through microscopic observation and statistical analysis. The standard clarifies operational procedures such as sample disintegration, slide preparation, and microscopic observation, standardizes fiber identification characteristics and statistical methods, and ensures the accuracy of fiber composition analysis results.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | Y30 | ICS | 85.010 |
| Release Date | 2020-07-21 00:00:00 | Implementation Date | 2021-02-01 00:00:00 |