GB/T 37858-2019 English PDF

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GB/T 37858-2019: Pulp - Determination of the weight of wet fiber
Status: Valid

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Basic data

Standard ID: GB/T 37858-2019 (GB/T37858-2019)
Description (Translated English): Pulp - Determination of the weight of wet fiber
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y30
Classification of International Standard: 85.010
Word Count Estimation: 10,169
Date of Issue: 2019-08-30
Date of Implementation: 2020-03-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 37858-2019: Pulp - Determination of the weight of wet fiber

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Pulp - Determination of the weight of wet fiber ICS 85.010 Y30 National Standards of People's Republic of China Determination of wet weight of pulp fibers Published on.2019-08-30 2020-03-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of the contents of this document may involve patents. Publication of this document The organization does not assume responsibility for identifying these patents. This standard was proposed by the China Light Industry Association. This standard is under the jurisdiction of the National Paper Industry Standardization Technical Committee (SAC/TC141). This standard was drafted. Guangdong Paper Research Institute, Nine Dragons Paper (Dongguan) Co., Ltd., China Pulp and Paper Research Institute Co., Ltd. The main drafters of this standard. Chen Yang, Han Hongbo, Chen Yangming, Song Linlin, Liang Jianwen, He Weiming. Determination of wet weight of pulp fibers

1 Scope

This standard specifies the method for determining the wet weight of pulp fibers. This standard applies to all kinds of pulp.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 740 pulp sample taken GB/T 5399 Determination of pulp slurry concentration GB/T 22903 Standard water for pulp physics test GB/T 24327-2009 pulp laboratory wet dissociation chemical pulp dissociation GB/T 29285-2012 pulp laboratory wet dissociation mechanical pulp dissociation

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Fiber wet weight weightofwetfiber Under the specified conditions, the frame rises from the bottom of the Shawble-Rigler-type water purifier with a pulp suspension to the top After that, the quality of the wet fiber left on the frame.

4 Principle

Place the selected frame on the sealed cone at the bottom of the Shawble-Rigler-type water purifier, then add a volume and a thick Pour the pulp suspension into the water filter of the Shawble-Rigler-type beating meter, lift the sealing cone and weigh the wet fiber hanging on the frame. The quality of the dimension is the wet weight of the fiber.

5 instruments and reagents

5.1 Xiao Boer-Rigler type beating meter. 5.2 Electronic balance. The sensitivity is 0.01g. 5.3 Measuring cylinder. 1000mL. 5.4 Stopwatch or electronic timer. resolution is 0.1s. 5.5 Fiber wet weight frame. divided into 16 and 25 gears, the structure and dimensions are shown in Appendix A. 5.6 Standard dissociator. It should meet the requirements of Appendix B of GB/T 24327-2009 or Appendix B of GB/T 29285-2012. 5.7 Standard water. It should meet the requirements of GB/T 22903. If other water is used, it should be noted in the report. ......

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