"GB/T 2677.5-1993 Determination of 1% sodiumhydrate extract content of papermaking raw materials" standardizes the relevant determination methods of papermaking raw materials. It is clear that the raw materials are treated with 1% sodiumhydrate solution to determine the content of the extract, covering principles, reagents, instruments, operation steps and result calculations, etc., to provide a standard basis for accurately evaluating the composition of papermaking raw materials and controlling the mass of raw materials.
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 | |
| Release Date | 1993-03-01 00:00:00 | Implementation Date | 1993-10-01 00:00:00 |