GB/T 40272-2021 stipulates the determination method of acid-soluble mg, calcium, manganese, iron, copper, sodium and potassium in paper, Cardboard, pulp and cellulose nanomaterials. The standard specifies the scope and principle of application, specifies the equipment, reagent materials, sample prepative, analysis steps, etc., standardizes the calculation and representation of element content results, provides a unified standard for scientific and accurate determination of acid-soluble metal element content in related materials, and helps to control product mass and analyze material composition.
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 | 2021-05-21 00:00:00 | Implementation Date | 2021-12-01 00:00:00 |
