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SN/T 4249-2015 English PDF

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SN/T 4249-2015: Determination of moisture and basic density of wood chips for the pulp
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
SN/T 4249-2015	English	169	Add to Cart	3 days [Need to translate]	Determination of moisture and basic density of wood chips for the pulp	Valid	SN/T 4249-2015

PDF similar to SN/T 4249-2015

Standard similar to SN/T 4249-2015

GB/T 18107 LY/T 1184 SN/T 4017

Basic data

Standard ID	SN/T 4249-2015 (SN/T4249-2015)
Description (Translated English)	Determination of moisture and basic density of wood chips for the pulp
Sector / Industry	Commodity Inspection Standard (Recommended)
Classification of Chinese Standard	B68
Classification of International Standard	79.040
Word Count Estimation	7,736
Date of Issue	2015-05-26
Date of Implementation	2016-01-01
Regulation (derived from)	State Quality-Inspection-accreditation [2015] No.224
Issuing agency(ies)	General Administration of Customs
Summary	This standard specifies the method for measuring the moisture content of the paper and wood basic density. This standard applies to the production of pulp wood moisture content and basic density.

SN/T 4249-2015: Determination of moisture and basic density of wood chips for the pulp

---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.
Determination of moisture and basic density of wood chips for the pulp People's Republic of China Entry-Exit Inspection and Quarantine Industry Standard Method for determining moisture content and basic density of paper chips Released on.2015-05-26 2016-01-01 implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued Entry and exit inspection and quarantine Industry Standard Method for determining moisture content and basic density of paper chips China Standard Press Publishing First edition in February.2016

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Certification and Accreditation Administration. This standard was drafted. Hunan Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. The main drafters of this standard. Zhu Haiyan, Zhou Bo, Chen Xinhuan, Li Yongjun, Tang Jianwei. Method for determining moisture content and basic density of paper chips

1 Scope

This standard specifies the method for determining the moisture content and basic density of paper chips. This standard is applicable to the determination of the moisture content and basic density of wood chips used in the production of pulp.

2 Terms and definitions

The following terms and definitions apply to this document. 2.1 Basic density basicdensity The drying quality per unit volume of the wood chip sample in the saturated moisture state. 2.2 Drying quality oven-drymass The quality of the wood chip sample after drying to constant weight. 2.3 Raw material volume greenvolume; soakedvolume The volume when the wood chip sample is in a saturated moisture state.

3 Principle

3.1 Moisture content The paper chips were dried to constant weight at (105 ± 2) °C, and the mass fraction of moisture was calculated from the mass loss of the chips. 3.2 Basic density The density of water is 1g/cm3, and the quality of the discharged water after the saturated water sample is equal to the sample volume is equal to the sample volume value. Raw material volume. The ratio of the drying quality to the raw material volume is the basic density.

4 instruments and materials

4.1 Metal tray. suitable for holding samples. 4.2 Drying box. The control requirement of (105±2) °C should be met. 4.3 Balance. The sensitivity is 0.1g. 4.4 Sample basket. stainless steel mesh material, mesh diameter 2mm × 2mm, with cover, can be closed. Recommended diameter is 170mm, height is 200mm. 4.5 Sample sieve. The pore size is 5mm~12mm. 4.6 Towel. Cotton or linen, no hair. Clean, dry and absorbent. New towels should be cleaned at least 6 times before first use. 4.7 Container. It is used for water storage immersion sample basket, and transparent material is suitable.

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