GB/T 22878-2008 "Paper and Board - Estimation of Dirt" specifies the method for estimating impurities in paper and board, applicable to various types of paper and board. The test involves spreading the sample flat under standard lighting conditions, visually or with the aid of tools to identify and count impurities, measure their area, and classify them. The standard defines criteria for impurity determination, sample area, and the presentation of results, providing a quantitative basis for quality control of paper cleanliness.
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 | 2008-12-30 00:00:00 | Implementation Date | 2009-09-01 00:00:00 |