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YS/T 438.4-2013 English PDF

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Q: Should I purchase the latest version YS/T 438.4-2013?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version YS/T 438.4-2013 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$139.00 · In stock
Delivery: <= 2 days. True-PDF full-copy in English will be manually translated and delivered via email.
YS/T 438.4-2013: Methods for physical performance determination of sandy alumina. Part 4: B.E.T method for determination of specific surface area
Status: Valid

YS/T 438.4: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YS/T 438.4-2013	139	Add to Cart	2 days	Methods for physical performance determination of sandy alumina. Part 4: B.E.T method for determination of specific surface area	Valid
YS/T 438.4-2001	199	Add to Cart	2 days	Methods for physical performance determination of sandy alumina. Determination of specific surface area. B. E. T. method	Obsolete

Similar standards

YS/T 581.15 GB/T 1425 GB/T 351 YS/T 438.2 YS/T 438.3 YS/T 438.1

Basic data

Standard ID: YS/T 438.4-2013 (YS/T438.4-2013)
Description (Translated English): Methods for physical performance determination of sandy alumina. Part 4: B.E.T method for determination of specific surface area
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: H21
Classification of International Standard: 71.100.10
Word Count Estimation: 5,511
Older Standard (superseded by this standard): YS/T 438.4-2001
Regulation (derived from): Ministry of Industry and Information Technology Bulletin 2013 No. 23; industry standard filing Notice 2013 No. 7 (No. 163 overall)
Issuing agency(ies): Ministry of Industry and Information Technology
Summary: This standard specifies the continuous flow chromatography sandy alumina surface area analysis method. This standard applies to sandy alumina Determination of the specific surface area.

YS/T 438.4-2013: Methods for physical performance determination of sandy alumina. Part 4: B.E.T method for determination of specific surface area

---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.
Methods for physical performance determination of sandy alumina Part 4. BET method for determination of specific surface area ICS 71.100.10 H21 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 438.4-2001 Sandy alumina determination of physical performance Part 4. Determination of the specific surface area Part 4. BETmethodfordeterminationofspecificsurfacearea Issued on. 2013-04-25 2013-09-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

YS/T 438 "sandy alumina determination of physical performance" is divided into five sections. --- Part 1. Determination of particle size distribution by sieving; --- Part 2. Determination of the abrasion index; --- Part 3. Determination of angle of repose; --- Part 4. Determination of specific surface area; --- Part 5. Determination of α- alumina content of X- ray diffraction. This is Part 4. The partial replacement of YS/T 438.4-2001 "sandy alumina determination of physical performance than the surface area determination." This part is YS/T 438.4-2001 "sandy alumina determination of physical performance of the specific surface area measurement," the amended and YS/T 438.4-2001 compared to the main changes are as follows. --- Original measurement step to ST-03-type surface and pore size analyzer written by common standards for the preparation than the surface area analyzer; --- Increased precision; --- Increased quality assurance and control of the content; --- The drying temperature of the sample is "300 ℃ ± 10 ℃" changed to "105 ℃ ± 5 ℃". This section drafted in accordance with GB/T 1.1-2009 given rules. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized. This part mainly drafted by. Aluminum Corporation of China Guangxi Branch, Luoyang Xiangjiang Wanji Aluminum Co., Ltd. The main drafters of this section. Yang Yun screen, the more Liang Bin, Luo Xiangning, Zhang Feng flowers, Jiang Wei. This part of the standard replaces the previous editions are. --- YS/T 438.4-2001. Sandy alumina determination of physical performance Part 4. Determination of the specific surface area

1 Scope

This section specifies the method for the determination of the specific surface area sandy alumina continuous flow chromatography. This section applies to sandy alumina ratio of surface area measurement.

2 Method summary

Based on low-temperature physics adsorption principle, a single channel continuous flow of gas chromatography, by measuring the sandy alumina samples in liquid nitrogen (-196 ℃) At a temperature on the adsorption of nitrogen using adsorption theory and calculated the BET specific surface area of the sample layers.

3 Reagents

3.1 Nitrogen. more than 99.99% purity. 3.2 Helium. purity of 99.99%. 3.3 high purity liquid nitrogen. 3.4 ethanol. AR. 3.5 Industrial hydrochloric acid. 3.6 glass wool. 3.7 cotton.

4 Instrument

Surface area enables the nitrogen adsorption occurs at liquid nitrogen (-196 ℃) temperature and single-point or multi-point analysis. 4.1 surface area analyzer Analyzer. 4.2 Determination of the data processing system. 4.3 sample tube. 4.4 dryer. 4.5 Oven. Maximum temperature 300 ℃. 4.6 Analytical balance. accuracy 0.1mg. 4.7 mug.

5 Sample

5.1 empty sample tube (4.3) at 105 ℃ ± 5 ℃ drying for about 30min, desiccator (4.4) to cool to room temperature, and call quality. 5.2 Sample loaded sample tube (5.1), the sample together with a sample tube together drying 2h at 105 ℃ ± 5 ℃, remove the desiccator (4.4) to cool to room temperature in standby. 5.3 will bake a good sample and sample tube (5.2) to determine the quality of subtraction of the sample, the sample tube end lightly stuffed with wool, the completed ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of YS/T 438.4-2013_English be delivered?

Answer: Upon your order, we will start to translate YS/T 438.4-2013_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 2 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of YS/T 438.4-2013_English with my colleagues?

Answer: Yes. The purchased PDF of YS/T 438.4-2013_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version YS/T 438.4-2013?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version YS/T 438.4-2013 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.