"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.
| Status | Active |
|---|---|
| CCS | Y30 | ICS |
| Release Date | 1993-03-01 00:00:00 | Implementation Date | 1993-10-01 00:00:00 |